Upgrade to Pro — share decks privately, control downloads, hide ads and more …

The Fermi Paradox

The Fermi Paradox

My slides for Blinkist's learning session.

Presented on Feb 03, 2016, at Blinkist's HQ.

Leandro Favarin

February 03, 2016
Tweet

More Decks by Leandro Favarin

Other Decks in Science

Transcript

  1. Some numbers… 1022 to 1024 stars/universe 100 Billion to 400

    Billion stars in our galaxy 100 Billion to 400 Billion galaxies in universe
  2. 22% to 50% Sun-like stars: Sun-like with Earth-like planet: For

    EVERY GRAIN of SAND in the world, there are 100 Earth-like planets 5% to 20% (size, temperature, luminosity)
  3. % of planets that develops life 1% 99% % of

    planets with advanced life (like us) 99% 1%
  4. * Type I Civilization * Type II Civilization * Type

    III Civilization Ability to use all of the energy on their planet Can harness all of the energy of their host star Blows the other two away, accessing power comparable to that of the entire Milky Way galaxy Kardashev Scale
  5. Explanation Group 1: those explanations which assume that there’s no

    sign of Type II and Type III Civilizations because there are none of them Explanation Group 2: those which assume they’re out there and we’re not seeing or hearing anything for other reasons
  6. Explanation Group 2: Type II and III intelligent civilizations are

    out there—and there are logical reasons why we might not have heard from them.
  7. Possibility 2) The galaxy has been colonized, but we just

    live in some desolate rural area of the galaxy
  8. Possibility 3) The entire concept of physical colonization is a

    hilariously backward concept to a more advanced species
  9. Possibility 4) There are scary predator civilizations out there, and

    most intelligent life knows better than to broadcast any outgoing signals and advertise their location
  10. Possibility 5) There’s only one instance of higher- intelligent life—a

    “superpredator” civilization (like humans are here on Earth)—who is far more advanced than everyone else and keeps it that way by exterminating any intelligent civilization once they get past a certain level
  11. Possibility 6) There’s plenty of activity and noise out there,

    but our technology is too primitive and we’re listening for the wrong things
  12. Closing thoughts: Whatever the truth actually is, it’s mind-blowing It’s

    a blow to our species’ self-esteem when comparing the universe to our small kingdom here on Earth We’re probably not as smart as we think we are