Psychopoly

Out of these reasons why (we haven't found aliens) which is most realistic?

1. Rare Earth Hypothesis / Great Filter
2. Self Destruction Theory
3. Dark Forest Theory
4. Zoo Hypothesis / Incubation Theory
5. Early Bird Theory
6. Signal Propagation Issues
7. Difficult Galactic Colonization
8. Alien Presence on Earth
9. Short Lifespan of Civilization
10. Different Forms of Life
11. Simulation Hypothesis
12. Resource Allocation

9 months ago | [YT] | 59