Fermi's Paradox and the Psychology of Galactic Empires | Matthew O´Dowd | TEDxTUWien

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  • Published on Aug 9, 2017
  • We now know that the Galaxy is full of potentially habitable planets. So why do we see no signs that any civilizations have come before us? Matt O'Dowd, astrophysicist and host of PBS Space Time, explains why Fermi's paradox really is so surprising, and he offers a new piece of evidence that may point towards the solution.
    Astrophysicist Matthew O’Dowd spends his time studying the universe, especially really far-away things like Quasars, super-massive black holes and evolving galaxies. He completed his Ph.D. at NASA´s Space Telescope Science Institute, followed by work at the University of Melbourne and Columbia University. Currently he is a professor at the City University of New York´s Lehman College and an Associate at the American Museum of Natural Historys Hayden Planetarium.

    Thumbnail © Nadja Niemiec
    This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at www.ted.com/tedx

Comments • 1 431

  • chris hooge
    chris hooge 13 hours ago

    Or maybe we're too naive not to ascribe to The Dark Forest Theory.

  • Jim EC
    Jim EC 17 hours ago

    12:30 I don’t think Clarke was referring to some great filter, if life is only on Earth in this universe is what is terrifying?

  • Dave
    Dave Day ago

    its about time an Aussie told the world how it is.

  • Sir Erkel
    Sir Erkel 6 days ago

    It would be great if we were alone. We’d basically be gods if there’s nothing out there

  • josh fritz
    josh fritz 6 days ago +1

    I think alien life exists, but the vast majority of it is likely very simple life forms. Even planets with more complex, multi celled life forms are still unlikely to have intelligent life.

    • lib mitchell
      lib mitchell 5 days ago

      human intelligence is not the only intelligence. plants have an intelligence too. THe whole Earth as a living system is an intelligence. not human obviously - we are just a very blind self absorbed little part of it.

  • sartarite
    sartarite 10 days ago

    There is no elbow on that exponential chart, it is simply an artefact of the vertical scale you assign to the graph.The projections on possible past filter points sort of proves this.

  • zbrown02
    zbrown02 13 days ago

    but like.. how would we know if we did?

  • Mike Reds
    Mike Reds 13 days ago

    I think we will discover life is every were even in our own solar system i think we may find life but intelligent life is probably so rare we may never find it especially not close by because it has to be rare or else we would have already maid contact in any case we now that there are many things in the universe that could wipe us out most notably ourselves the only way we can truly prevent this is by spreading and colonizing every rock we can find and can survive on because it is inevitable that disaster will strike it could happen to marrow it could be a billion years from now or any time in between with that said why not spread the galaxy and create a galactic empire so what if there is no other there is a first for everything

  • marte thompson
    marte thompson 14 days ago

    The dinosaurs existed for millions of years on this planet, and then became extinct. There is no guarantee that life on other planets results in human-like creatures.

  • Adrien Nash
    Adrien Nash 15 days ago

    There are three 'hows' to transmission.
    One involves broad-spectrum vs narrow spectrum.
    Another involves transmission with a narrow focus (laser) vs wide field.
    The other is analog vs digital.
    The age of analog transmission at high power is short, less than a century perhaps. So what exactly are the signals searchers are listening for? Digital only?
    If so, then what are the odds of perceiving very short bursts of digital data across the galaxy? Would the listeners even recognize a short burst as something other than from some mysterious natural source?
    And to even received such a signal would require that it be sent as a wide-field transmission instead of as a narrow focused one. Do they actually hope that some distant civilization has sent out a digital signal aimed specifically at Earth?? The odds are looking pretty bad I'd say.

  • phanupong asvakiat
    phanupong asvakiat 18 days ago

    Don’t forget that stars, planets(especially this earth), galaxies are living entities on a different dimension and different form of life closer to AI. And how about electromagnetic life form.

  • Massimo Bozzi
    Massimo Bozzi 19 days ago

    The sum total of all electromagnetic outputs by humanity can be contained in a bubble expanding at the speed of light roughly two hundred light years in diameter. For reference, our galaxy is about 120 thousand light years across. Basically, anybody that is out there is never going to see anything we have ever done within any reasonable time frame, even though the Universe may be teeming with life.

  • Mr Big
    Mr Big 20 days ago

    What makes you think "god like technology" is the end game? What makes you think a galactic empire exists? Empires only exist as a result of scarcity. Power usage doesn't go up in line with technological advancement, it goes down. Stop looking to technology as god.

  • Chris Hill
    Chris Hill 22 days ago +1

    Drink some water man damn

  • Chris Dumont
    Chris Dumont 23 days ago

    Is this guy joking? How old is this? For one, we know we are not alone, you can trust your gut and not be ashamed just because the c-i-a goes and makes a word powerful designed to turn people's attention away. Move past that and think about why the media shows you what it does, and ''does not''. Just buy a pair of military grade night goggles look at the sky at night and never again have to wonder. Aliens is an improper word tho, i'd prefer other species or even better Angels who share earth's skies, earth, and the abyss. Some call them Djinn, some call them Annunaki, some call them ghosts. Not to be confused with demons, those can not manifest in this realm or dimension, but somehow can influence it maybe with energy. CERN is working to fix that, rest assured.

  • Jack Kessler
    Jack Kessler 24 days ago

    This video is the equivalent of parents assuming their teenage children have died because they have not received handwritten letters in the mail from them. The speaker assumes that every civilization, no matter how different and no matter how advanced, will conduct interstellar communications by radio. Because we do. We are only a few centuries from sending messages by tom toms and smoke signals. Marconi invented long distance wireless in 1901, slightly more than one lifetime ago. This video was made in 2013. Three years later, in 2016, LIGO went online, providing an entirely different form of signal than electromagnetic, so his argument has already been proven wrong. People without imaginations, like the fellow in the video, assume that history has ended now that they have arrived. It hasn't. It is easily imaginable that in the coming centuries means of communication as superior to radio as radio is to yelling, will be devised. In the coming millennia even those newer modes may be surpassed.

  • Foreclosure
    Foreclosure 24 days ago

    I'm intrigued, but all I hear is spit.

  • David Jones
    David Jones 26 days ago +2

    Many early explorers thought the same thing about a land they were entering only to encounter the natives. Just because we have not or (maybe) cannot see the signs does not mean it is not there. If the communications network relies on something other than radio, if the source is far enough away and/or passes though enough interference, if... so many if's we still cannot answer. We maybe the first, but we not be...

  • etheralwizard
    etheralwizard 29 days ago +2

    As for galactic SIGINT - signals intelligence - the inverse square law diminishes transmissions from Earth over the light years. As long as we are not deliberately beaming high powered signals towards other stars, our transmissions are rather unlikely to be received by other civilizations. The same holds true for the signal emissions from other civilizations. These signals degrade over the light years to the point that they get lost in the background noise. Think of all the times that you could not get good cell reception or pull in a broadcast radio or TV station. Those are very trivial distances over which you are trying to draw signal from.....

  • Dick Jonsen
    Dick Jonsen 29 days ago +1

    Or... after a certain point in development a civilization no longer emits strong rf radiation into space and uses alternatives. These may not be readily detectable .

  • Dick Jonsen
    Dick Jonsen 29 days ago

    42

  • ted bohne
    ted bohne 29 days ago

    sixth mass extinction?

  • Harold Hart
    Harold Hart Month ago

    ASK NOAH ON THE ARK !!!

  • Eduardo Prado
    Eduardo Prado Month ago

    I cannot see smoke signals anymore nowadays. We all know the reason why, stay away from religion.

  • Doctored Claw
    Doctored Claw Month ago +2

    Todays science is corrupted by the fact that just look at some of the previous civilizations on our own planet how certain structures that were built 12k years ago or more are almost impossible to build today and scientist will not acknowledge much of these civilizations because it will hurt a famous professors reputation because history will need to be changed to reflect the true facts.

  • War Never Changes
    War Never Changes Month ago

    We need The Emperor!

  • Duel Dab
    Duel Dab Month ago

    boring

  • Rick Deegan
    Rick Deegan Month ago

    Have you read the very last chapter of the book PRAGMATICS OF HUMAN COMMUNICATION? Please do.

  • Spartacus547
    Spartacus547 Month ago

    Does the Fermi Paradox take into account governments around the world conspiring together to keep all advance science secret for 50 years ? Because of "National Security" my question is where is the Paradox if we're not allowed to know the information

    • Evan P
      Evan P Month ago

      Yes, that's one of the commonly accepted explanations. That we have been in contact with aliens and the government(s) of the world hide it from the general population.

  • Spartacus547
    Spartacus547 Month ago

    I'm pretty sure that guys like this wouldn't believe in intelligent alien life even if it showed up on the White House lawn planted a flag and started saying hello

  • BuildRBlock
    BuildRBlock Month ago

    I actually think aliens exist, they are just at a very similar point in technological advancement, hense why we haven't seen anything.. yet.

    • PhantomBoii420
      PhantomBoii420 Month ago

      The test might be "how long will an intelligent civilization take to be a galactic civilization"...

    • PhantomBoii420
      PhantomBoii420 Month ago

      Tbh there's a higher chance that we live in a gigantic computer simulation and we're the sole test subjects..

  • Hulbog Stonethrower
    Hulbog Stonethrower Month ago +1

    Anthropic Principle > Fermi Paradox

  • Joakim Nybäck
    Joakim Nybäck Month ago

    i cant get over how much he smacks with his mouth while talking, makes it almost impossible to listen

  • Ed Felty
    Ed Felty Month ago +5

    I personally feel a lot better thinking that we're not alone in the universe.

  • appraised
    appraised Month ago

    F yes!!! You nailed it dude...

  • Tomas Svoboda
    Tomas Svoboda Month ago

    He is mistaking his guesses for certainties

  • GlaucusBlue
    GlaucusBlue Month ago

    I've never understood the need for a great filter. We can only look at earth, there are so many small filters the probabilities become enormously improbable. Massive gas giants, large moon, Distance from sun, even then intelligent life is rare, what half a dozen species in billions of years and even then only one has survived to become dominate, nuclear war, asteroid hits, global warming. Not to mention the small odds of two intelligent species being around in the same era of the universe, the shear distance between galaxy's, not just the time difference but the power of radio signals needed to be sent to be detectable over 100s or millions of light years above the back ground noise. And the colonise rapidly hypothesis makes no sense to me, there's only so fast we can breed, thus limiting what we need to colonise, especially when we consider the cost and effort. And about a thousand other things. For simplicity if you take each of those filters as 1 in 1000, the odds of ever finding another civilisation is well depressingly near zero.

  • Bo Dylan
    Bo Dylan Month ago +4

    "galaxy is silent???"
    another one who doesnt believe in evidence. big surprise...

  • Steven Sanchez
    Steven Sanchez Month ago

    Lol

  • David Wilkie
    David Wilkie Month ago

    "whatever can happen will happen an infinite number of times", (can't remember who to quote/credit), so this is it, WYSIWYG, this particular state-type of embodiment, of sum-of-all-histories evolving cycles of evolution-that-is-(re)learning how to Be in this particular context. Same Principle everywhere, eternally, recursive In-form-ation development in pre-existing Phys-Chem general context of QM-Time. Look around, and Biology is extremely wasteful of living things consuming each other, it does not seem likely that a super intelligent culture wouldn't become more efficient at sustaining purposeful development, and become more self-sufficient and passive. Summed up in a word.., Embodiment, implies the Observable Universe with which we are resonant-tuned components, not quite unified, not really separate.

  • Phil Schuler
    Phil Schuler Month ago +1

    Listening to these ted talks, I observe that the speakers are all liberals and self absorbed. And it takes them forever to get to the point. I have not been able to watch one of them to the end.

    • Simo
      Simo Month ago

      the masses are mostly libtards and feminists. if you want to spread your message you have to sugar-coat it as if you're talking to kindergarten kids. You have to at least pretend to hate trump to get started. Even if he makes more sense than the other options, forget logic

  • Calvin Sylveste
    Calvin Sylveste Month ago

    The inhibitors are very good at their job.

  • luke bristol
    luke bristol Month ago

    We are the eyes and ears of the universe.

  • John Nelson
    John Nelson Month ago

    Surveyed but not encountered

  • Luke Marshall
    Luke Marshall Month ago +2

    I actually love this guy, someone give him a TV show

  • Jonathan Leviton
    Jonathan Leviton Month ago +4

    someone get this man some water

  • perry lc
    perry lc Month ago

    If we are the only intelligent life in the universe, just think how very special each person on earth is.

  • MultiBagram
    MultiBagram Month ago

    Isn't the Fermi Paradox explained by the vast distances, in space? A Star Trek warp drive is NOT theoretically possible.

    • MultiBagram
      MultiBagram Month ago

      How fast would it be theoretically possible to travel?

    • Phoenix Planner
      Phoenix Planner Month ago

      Surprisingly, no.
      The galaxy itself would be possible to colonize within a relatively short span of time.

  • euclon1
    euclon1 Month ago

    I bet there's Klingons around Uranus.

  • Dr. Drake Ramoray
    Dr. Drake Ramoray Month ago

    i dont care about fermi paradox. i literally clicked this video because it was 23:45 in length and was extremely disappointed when the video opened and it was actually 23:44

  • Kevin H
    Kevin H Month ago

    I think the Fermi Paradox can be solved by understanding Quantum computers, super inteligent A.i. (Smarter/more creative than humans), and quantum entanglement. With the three things I just mentioned, I think we will be able to manipulate and monitor atoms leading to non invasive brain computer interfaces. Basically, the three listed technologies are so powerful, existence in any galaxy is dangerous because other civilizations could use the technologies to take over another planet with out any conventional weapons. All civilizations want to stay hidden as long as possible and are very careful about first contact.
    Moreover, I personal think planet earth is being used as a "light house trap." That is earth has had gasses in the atmosphere that are often made by life (microboes) so earth has been a light house for many millions of years and if you want to be safe in this universe you can find earth like planets and just wait until a 3rd party makes contact peacefully or "violently."

  • Edward Rhoads
    Edward Rhoads Month ago

    He has left out one other possibility, SETI can only detect civilizations within a few thousand light years. So, it is possible there are few enough civs that they are more than 2000 light years from us. Also, it is possible that civs evolve through the techs that we would be able to observe so quickly that we therefore don't observe them.

  • cascadianone
    cascadianone Month ago +2

    I love Matt, but I fear he's missed the mark on this one. Sure, the Great Filter could be supernova exposure or large asteroid strikes, occasional events which we may be able to literally escape from by putting colonies elsewhere... but I'm guessing the Filter is actually technological in nature. Earlier humans lacked the capacity to kill all higher life forms on this planet. But for almost a century now, we've been developing the tools to do it: Nuclear war, engineered viruses, perhaps climate change itself could all spark cascading mass extinctions. One form of destruction might lead inexorably towards all the others, reinforcing the effects. If no crops will grow in the soil, why not nuke your neighbors for their remaining food supplies? If your country is under threat, why not release a virus designed to kill all your enemies? If there is a global war on, why worry about CO2 output? And so on... While I do hope I'm wrong, and we may well just be "early" to the sentience game, we must still grapple with the fact that WE are the greatest threat to our specie's continued survival.

    • Tim Truscott
      Tim Truscott Month ago

      cascadianone Whist I’m excited and inspired by Matt’s ‘filter behind us’ theory, I do agree with your sentiments. We may be on the verge of leaving our eternal mark on the solar system technologically, it feels like we’re at an important juncture, or race between technology and our natural environment. And there are no guarantees our ultimate demise (and thus I suspect all intelligent life) isn’t in creating intelligence greater than our own...

  • 1DownKhonvex
    1DownKhonvex Month ago

    awesome speech

  • riley boomer
    riley boomer Month ago

    I was like “wait is that my physics teacher??? Wait nvm it’s the PBS space time guy, close enough” XD

  • Cool Cat
    Cool Cat Month ago +1

    I think Matt has an Achilles heal. (public speaking) Matt is brilliant on PBS space time & he has a brilliant physics mind. I hope his public speaking improves and becomes a little smoother (same as his PBS stuff) because he’s a real inspiration for many people. KEEP UP THE GREAT WORK MATE! 👍🏻🙂

  • Ronald Garrison
    Ronald Garrison Month ago

    I would never say where I think the Great Filter IS. Not a chance; I'd never be that bold. But if I were FORCED to hazard a GUESS, I'd say there's not really any Great Filter, but more of a Great Filtering, all along the way. From having stars of the right mass, in the right place in a galaxy, with the right metallicity, and so on down the line. Some cometary impacts, but not too many, and not at the wrong time. Some of those filtering factors don't so much weed out possible candidates, as they just stretch out the timeline. So it may be that its only in the last few billion years that planets have arisen that could develop life. And then it had to have time to develop to sapience. And THEN, if such a place is, say, a billion light years away, its light may not have had time to get to us yet. Hence, the Silence. Then it may be that the part of the Universe where evidence of ETI could be evident to us would be in a bubble of a billion light years from us. Right there, you've reduced the possible set of contactable worlds by more than a factor of a thousand.
    To quote Ellie Arroway, we need a bigger antenna. And more of them. With a lot more receivers attached.

  • Max SMoke
    Max SMoke Month ago

    People love to talk about how we don't see any galactic background chatter from other creatures. People don't realize just how much the power of radio waves fade over distance. You could be half way between our star and our closest neighbor, and you couldn't build a radio telescope array big enough to detect *ANY* of our radio waves. Even above ground nuclear bomb testing couldn't be detected over the radio output of our sun at that distance. That's only 2.1 light years away, and the Earth seems TOTALLY silent.

    Stars produce MASSIVE amounts of radiation in all spectrum. We only know about exo-planets because of wobble and tiny shifts in light as a planet passes before it. They could be BLASTING EMF out. Every alien out of a population of billions could have a Ham Radio tower, and we couldn't detect them even at just 2 light years.

    That doesn't even begin to add in the fact that we today are moving away from large amounts of radio waves. Our TV's are turning to lower power digital signals, our communications are through tight networks of cellular towers. We are producing less and less radio waves, moving towards focused microwave dishes and fiber optic cables. We don't even blow up nuclear warheads above ground anymore. We're dropping off radio transmissions that can be detected, even at the edge of our solar system.

    If any galactic civilization was communicating between each other, they wouldn't do so through radio waves. Who wants to wait 10 to 100 years just for a "Hello?". They would either use faster then light craft to move messages, or use some means of interdimensional transmission we don't even know of. Even Star Trek has "Subspace" communications.

  • Captain Anopheles
    Captain Anopheles 2 months ago +1

    This is hopelessly modern centric.

  • Spectre 4913
    Spectre 4913 2 months ago

    There is a lot of life in the universe. Intelligent life I think is more rare. The human race would not exist as it does today if not for the annunaki creating us to be slaves. I don't think our level of intelligence spawns naturally.

  • Glennie Sewell
    Glennie Sewell 2 months ago

    I like this guy, but the theory is a bit to arrogant-leaning toward humans. We are still at Stage Zero for Civilisations, and there is something to be said for our lack of useful technology to accurately detect civilisations around us. As well, there is something to be said for information on this subject that is being withheld. That idea doesn’t have to be a conspiracy.

  • Justice Joe
    Justice Joe 2 months ago

    There is an abundance of evidence we have been visited, even planted here. From angels in the bible to UFOs chased by the military.

  • Reyes Jimenez
    Reyes Jimenez 2 months ago

    Everything you say is well and good. As is all these presentations, but there is something not being addressed here. It's mentioned from time to time in a round about way, but as an obstacle to overcome only. More like all the obstacles we must overcome just to travel to Mars. Let alone getting to Neptune and Pluto. The time alone in space travel as we know it at this place in time for us that is. Well the craft alone and the supplies needed to sustain just one person is no small task. Now a Pluto run would take a hella lot longer than the 9 months Mars run. A generation give or take. So not just a crew is needed, but their families as well and that's just to Pluto. That is unless you've got a warp drive ship in your back pocket? LOL🤓
    All jokes aside Gravity is the next big hurled and some sort of shielding against going from Zero to Lightspeed in less than zero seconds. Remember the G-Force would make us mush on the rear wall of this fast as light ship. Although a gradual building of speed should allow us to adapt in theory anyways? We've actually never done it for real. So until we try it we won't know. Which also posses the question of how gradual is the build up and how long both in time and distance will that gradual build up take? Still we are of the mind set that we can overcome these obstacles eventually right.
    So then what is it that has been overlooked by all of you, but must be factored in as a strong possibility of never being able to leave our own Solar System? There are two possibilities just like life elsewhere. We were designed for interstellar travel or we're not designed for it. Maybe we are only supposed to stay right here by design? We live in a linear existence on a planet that rotates on a 24 hour axes give or take a few minutes. Which orbits a Sun to full cycle every 365 and a quarter days give or take a fraction. So we are governed by its rules as creatures born to this particular spot in the whole Cosmo. Now that is an undeniable fact of human existence. So time itself as we perceive it to be and is for us. Is just that for us relevant only to us period. We can't be so arrogant as to think that the rest of the Universe operates on Greenwich Mean Time right????? Well that's it and it's so easily overlooked too.👽

  • R Smith
    R Smith 2 months ago

    If you believe as I do , and as all evidence suggests , that there is no way around C for living beings , you arrive at a solution to the Fermi paradox .

  • tu_nonna_emiliana
    tu_nonna_emiliana 2 months ago

    Matt O'Dowd : Australia is my own town

  • Mystîc Fox
    Mystîc Fox 2 months ago

    I really wish he would've drank some water..

  • Alexis Rose
    Alexis Rose 2 months ago

    This is 23 minutes of pure wasted time for anyone who knows what Fermi Paradox is. It has nothing to do with galactic empires or psychology. Complete false advertising, empty of content, and delivered with such arrogance that it offends me. This person shouldn't be pretending to make scientific talks no matter how lyrical his voice may be.

  • John H
    John H 2 months ago

    Nobody knows for sure, how strong the next Micro Nova of our Sun will be. This cycle will be upon us anytime in the next few years to the next couple thousand years by the averages of the geological records... it will happen.
    I suggest we use our time and technology to find a way to survive and carry thru the Micro Nova as much of our civilization as possible. Luckily our USA Gov. has been digging underground since the 50's. Sadly, it will probably not benefit very many people. How do we escape such a possibly huge cataclysm and keep all we have made for ourselves. Maybe the answer is to just save some of us to carry on as we have in the past.
    Good Luck to all of you.

    • Sebastian Stark
      Sebastian Stark 2 months ago

      i mean if itll happen in thousands of years we'll probably have the technology to just stop it

  • Py16777216
    Py16777216 2 months ago

    We are quite self destructive. The prior civilizations in ancient times on this planet may have gone beyond our technology and derived energy from things we did not consider valuble and then destroyed themselves out of arrogance. Perhaps their technology all just decayed leaving only giant mystery stones remaining. If life can just happen spontaneously and some super origional being didn't eventually create and align this universe for us to go out and be everywhere eventually once we break the speed of light and stuff. We may be the actual first, and our creator just maintains the universe such that accidental organic life is nearly impossible besides on earth or beside more simple life. Perhaps earth has like a special component that everywhere else lacks fundamentally. Perhaps we are at the elbow of eternal life causing the economy to explode and force dramatic expansion of humanity to other stars and perhaps the entire galaxy as material resources become literally dirt cheap. We are likely the first large brained creature to be able to do readily innovate. As our population grows the chance for brilliance increases grows as well.

  • Pinku Mawile
    Pinku Mawile 2 months ago +1

    I'm guessing the Oxygen adaptation was the great filter, and that most ecosystems collapse after the first great explosion of life. But hey, this means we get to be the one to invite others to the party!

    • TheBoyWithTheThing
      TheBoyWithTheThing Month ago

      That is what I think as well. Most early life eventually chokes to death on its own waste. The evolution of a counter-balance to this (in our case life that used respiration, or animal life) is the great filter, and we've already passed through it.

  • Sean Draco
    Sean Draco 2 months ago

    I don't find being alone frightening. It be so cool to be the elders or precursors. Sharing the galaxy without being far ahead and entrenched does concernme a bit as nature breeds aggression, kin genes and selfishness. Our best are kind but power always goes to the dominate. Convergence in evolution is consistent so likely we'd find a xenophobic empire that's callous and has no issue basically enslaving its own (as we do poverty wages, have and have nots, so on.) I like to pretend we'll grow out of it but it's likely nature those traits that got us here are just as likely to take it all away.

  • Brian Grussing
    Brian Grussing 2 months ago +3

    Our tribalism & barbarism is the greatest inhibitor of our enlightenment

    • Devin McPherson
      Devin McPherson 23 hours ago

      I'm inclined to disagree. The Dunning-Kruger effect combined with Natural Egocentric Bias is much more concerning to me personally.

  • Matt H.
    Matt H. 2 months ago +3

    So let me get this straight. You believe that, because we have been looking for only FIFTY YEARS (absolutely NO TIME whatsoever) for signs of aliens and haven't found any, that we can say with some high probability that intelligent alien life is rare. That's adorable.
    The Fermi paradox is one of the dumbest suppositions in the history of man, as well as one of the most arrogant. We have just begun the search, and we basically have NO IDEA what to even look for since we only have ourselves as a basis for search criteria, and we think we can make any assumptions whatsoever. Like many scientists have said, that's like taking a cup of water to the ocean, scooping up some ocean water into it, and saying "there are no whales in the ocean."

  • jerk fudgewater
    jerk fudgewater 2 months ago +3

    Look at all the “primitive” peoples we’ve helped already!
    LOOK OUT ALIENS COLUMBUS IS COMING FOR YOU

  • Nuno Teixeira
    Nuno Teixeira 2 months ago

    A Type III Kardashev Scale civilization can hide their footprint in the Universe by using the same techniques humans use on modern warfare, like camouflage & cloak technologies. They can also hide their presence by using exotic or non identifiable communication technology (the galaxy is silent). I love this video, but again, humans tend to think they are at the center of the universe (a new geocentrism is rising "we become the ones..." )...we are not!

    • Sebastian Stark
      Sebastian Stark 2 months ago

      why would a type 3 civilization want to hide themselves though?

  • Who'sYourDaddy?
    Who'sYourDaddy? 2 months ago +1

    We expect to find life everywhere because we take it for granted here.

  • Chris S
    Chris S 2 months ago

    Omg! Drink some water! This guy’s dry mouth is the worst!

  • Chris S
    Chris S 2 months ago

    In my mind, the only way we are alone, is if this is a simulation. Also, I don’t believe in creation. But if we are a creation, I also think we must be in a simulation. Why else would we be created ? So to me, there are only two possibilities........ We are not alone, or we are a simulation.

  • Jønathan Alves
    Jønathan Alves 2 months ago

    Empires... Galactic empires... is hard to believe humanity will ever get that point when the world's leaders want to build walls... again. when these leaders are in charge by people's demand. When humans are giving up it's humanity...

  • Blinky 05
    Blinky 05 2 months ago

    Many people assume that any alien life will be like us. They possess similar technology, similar social behaviour, similar ideologies, similar motives to explore/conquer etc. It doesn’t mean there is no life, intelligent or otherwise, it may just be they have no humanlike psychological traits. And as such, we are alone in our galaxy, as far as the way we exist as a species is concerned.

  • Peter Welsh
    Peter Welsh 2 months ago

    Summary: I know nothing; anything is possible. Please don't make me work for a living. Building houses and producing food is for the peasants; I must be on my way to party with The Aliens

  • Barry Smith
    Barry Smith 2 months ago

    its very likely that advanced tech would go to phase-change, in order to isolate from all the destructive concrete phenomenon we have to fear, eg, cosmic rad., meteors, gravity, thus they're all over the bloody place, but undetectable

  • travis03
    travis03 2 months ago

    gobleki tepe

  • Kieron McKay
    Kieron McKay 2 months ago

    1) Climate affected by industrialization of civilization and expansion seems to be one of the highest probability failures of societies, certainly human ones. Deforesting or denaturing land until they screw it up and nothing grows anymore, no longer supporting society. It's happened over and over again for various communities and societies across history.
    2) Who assumes the nuke is the worst weapon we could ever make in human history? Or any intelligent species could ever make? Seems highly probable some other bigger weapon will one day be created or could be.
    3) A.I. and general technological intelligence / development seems a highly possible most societies wouldn't make it past.
    4) The galaxy is far more random and chaotic than we currently perceive and understand to be able to judge probability of life, humans after all are notoriously bad at predicting probabilities, particularly on huge scales.

  • Mike Leonick
    Mike Leonick 2 months ago

    Every person should work towards traveling amongst the stars and nothing else, don't get me wrong I know we need to eat, cure diseases, etc. Still all resources should go towards traveling the stars.

    • Doug G
      Doug G 2 months ago

      Mike Leonick too far away, also anybody who decides to go can never return to the planet they remember. Forever Nomads in time.

  • youcanfoolmeonce
    youcanfoolmeonce 2 months ago

    Can we afford to waste time on science fiction?

    • Sebastian Stark
      Sebastian Stark 2 months ago

      can you afford to waste time writing youtube comments?

  • youcanfoolmeonce
    youcanfoolmeonce 2 months ago

    There is a Galactic Empire: the US.

  • omgwhyme omgwhyme
    omgwhyme omgwhyme 2 months ago +1

    What if... I didnt watch this?

  • Stephen 1982
    Stephen 1982 2 months ago

    Too many mouth sounds.

  • Telcontar1962
    Telcontar1962 2 months ago +8

    WE don't choose to do anything. WE don't live in democracies. WE are led by the nose and told what we must pay for and what indignities we must submit to. The fact that people like this want to export that to the Cosmos is not appealing in the slightest. WE are largely unthinking passive consumers slowly being put to sleep by the same people this guy looks toward for our advancement as a species.
    I can't think of anything more depressing.

    • Kane Markoff
      Kane Markoff 2 months ago +2

      I'm assuming you're a communist, from the dates you rattled off it sounds like the end of large wars and you seem to think that the people need to overthrow their rich masters and govern themselves. Although I'm just guessing, because you're difficult to understand for the most part, and if you are a communist maybe it's time to give up the ideology that kills millions every time it's implemented.

    • Telcontar1962
      Telcontar1962 2 months ago

      @Eric Newton You really do talk twaddle from beginning to end. If those are random dates to you then you really have nothing to say, because you don't believe in live and let live at all. In fact to defend it is far too much effort for the likes of you.

      What you actually believe in is life as an irresponsible child. You should have stayed with mum and dad (if you tell me you do then I won't be surprised at all).

      The UK is a prime example where this "live and let live "philospohy" you pretend to admire does not exist even in the minutest degree.

      Maybe you really are so fake you actually believe the lies you tell yourself. What is true is its a deplorable trait in anyone.....unfortunately its usually others who have to pay the price for people like you.

    • Eric Newton
      Eric Newton 2 months ago

      @Telcontar1962 Wow. You sure did unload a whole lot... refighting battles you say?
      Adopt a philosophy of live and let live with a government that supports them in that vein.
      Current American government is so twisted and unmoored from the original Constitution and founding concepts that its not a prime example.
      Your other dates, I know not of what you speak of, since you rattled off random dates without calling out specifics about those dates.
      That being said, spreading a philosophy of self governance and the value of the individual out into the cosmos would be ideal and not depressing.
      Spreading in-situ servitude through socialism and communism type philosophies would only produce more suffering as has already been tried in history and modern day Venezuela examples.

    • Telcontar1962
      Telcontar1962 2 months ago

      ​@Eric Newton Ooh what a great idea. you mean the one we were supposed to have after 1649, and then again after 1918 and then again after 1945? You mean that one where the legitimate citizens were the ONLY authority to determine who was supposed to govern and who chooses who governs? That same philosophy that well over 100m people died for during the course of the 20th Century and the same one this illegal Parliament publicly professes to want to defy?
      You know what would depress me if I let it get to me? Its people like you who are as dim as they come and more than half the reason we constantly have to re-fight the same old battles, because they just won't stand for what was bequeathed to them.

  • TheAaron2442
    TheAaron2442 2 months ago

    Haha. I leave a big PBS Space Time Binge to unplug and see something different and who do I find?? Good talk anyway!

  • themasqueradingcow91
    themasqueradingcow91 2 months ago +4

    This is so interesting! But my god, the mic is far too close to his mouth. All I can hear is the wet from his mouth :(

    • Alice Lookingglass
      Alice Lookingglass 13 days ago +1

      It's not a pleasant sound. I'm thinking he should've had some water up there.😓

    • Gonzalo Nazar
      Gonzalo Nazar 2 months ago +2

      Oh my god. Now i've read this... I can't avoid hearing it.. UNBEARABLE

  • Bundy714
    Bundy714 2 months ago

    As it is now, being in space is really rough on the human body and it's immune system. That needs to be addressed before anyone is going to live on Mars or the Moon.

  • Jhuny-Boy Borja
    Jhuny-Boy Borja 2 months ago

    Isn't everywhere along an exponential curve an elbow???

  • Lars Paulsen
    Lars Paulsen 2 months ago +1

    This is why I'm happy that I didn't start viewing Star Trek at an early age, and therefor do not believe it to be a documentary from the future...

  • panicrev555
    panicrev555 2 months ago +1

    The reason we don't see anyone else is that their civilizations, as will ours sooner than later, became obsolete when their A.I. and the machines it controlled and created came to dominate creative understanding and evolved at such a rate that their makers and their makers' desires became irrelevant virtually overnight. Man will not figure out how to generate wormholes and warp drive - machines will - including things we can't even imagine. Machines don't suffer from the background static of perpetual discontent as humans do and won't long for frivolous new experiences on alien worlds in search of obsolete life. More likely machines will focus their efforts on the the most difficult question to answer, "Why?" and certainly won't look to archaic, religulous ideologies for enlightenment. Even more likely they will come up with questions inconceivable to the human mind. Humanity is ultimately a failure. We've been "civilized" for thousands of years yet we still murder each other for the profits of the few, still worship deities and still have the shortsightedness to believe we will be the conquerors of the universe. Wake up everybody! There's a new kid in town.

  • MrMojo13ification
    MrMojo13ification 3 months ago

    Load of useless bollocks

  • John Smith
    John Smith 3 months ago +1

    we need to worry about earth and not the stars if we don't we will die before we get there

  • Roger Stone
    Roger Stone 3 months ago +3

    Suggestions for what makes technologically advanced space-exploring life much more rare than the easy assumptions woven into previous estimating formulae:
    - is water as common as we assume? If only 1 in 1,000 possible 'Goldilocks zone' planets have this much water...
    - is it necessary for the planet to have moderate axial tilt and a big low moon, providing between them an energetic weather system and steady tidal stirring of the oceans? How common is that combination?
    - perhaps cellular life is easily formed (alkaline thermal vents being likely on any planet with lots of water and tidal surges) - but the adoption of bacterial mitochondrions and the bacterial nucleus-cell into an archaeon only seems to have happened once, generating the first self-replicating complex cell, our last common ancestor. That's once out of a couple of billion years of trying. Maybe there are a billion planets covered with bacterial slime, for every one that develops multicellular life.
    - perhaps life never develops into such complex and diverse forms unless there are intermittent ice ages and searing hot dry spells (so we need the right degree of ellipticity in the orbit, plus the right cycle of sunspot generation), to keep refining adaptability and survival through the mechanism of evolution. How many planets have just enough ice-age/fireball variation to pull this trick? If ours had been just a LITTLE more extreme, of course, life would not have survived at all. If the stresses had been less extreme, perhaps life would not be driven to such competitive evolution; the planet would just have a happy, complacent, plethora of cohabiting greenery, algae, and slime moulds.
    - the development of big brains and intelligence seems to have been an accidental by-product (quite illogical, since brains take so much energy to run) brought about by a freak coincidence of factors. What if that only comes about on one in ten thousand of the (extremely rare) planets that pass all the previous tests and reach the post-dinosaur mammalian diversity? (or an equivalent using whatever life-forms have evolved there)
    - even after hominids appear, genetics shows there is some sort of population bottleneck which our ancestors only just passed; on how many equivalent planets did they NOT survive?
    - finally, don't assume that moving from intelligent bands of hunter-gatherers using primitive tools and language, into modern technology, is inevitable. We were essentially modern humans, about 2 million years ago - perhaps earlier - and did little with it, for a long time. The increase in population density and the move to food production and animal domestication which took place in the Fertile Crescent area about 12-10,000 years ago could happen only because of the combination of animals and plants in that area; other parts of the world never made that move. On how many worlds was that move never made? "PROGRESS" IS NOT A GIVEN. Some societies lost technological advances and regressed, perhaps through climate change or through having exterminated some of the necessary species.

  • Fishslap 33
    Fishslap 33 3 months ago

    This really is bass ackwards. I know humans always project themselves onto the unknown, but this stuff is just taking that to another level.