Fermi Paradox Theories

Alone

Space Travel Is Too hard

No Interest

Time

We Missed It

Life Is Too Fragile

Gaian bottleneck hypothesis

Life Is Rare

Emergence bottleneck hypothesis

Humans Are The Smartest

Looking Time

Too advanced

They are already here

Too Far

Virtual Evolution

We’re Isolated Intentionally

planetarium hypothesis / zoo hypothesis

Advanced civilizations are purposefully eliminated