Paradox News

We're the first and/or only intelligent life in our light cone

The "Grabby Aliens" hypothesis

Something else

Intelligent life is doomed to destroy itself

Something makes interstellar expansion incredibly impossible

YES

Intelligent life is evolutionarily extremely rare

Other intelligent life is too different to recognize

The nature of intelligent life is to destroy itself

Other intelligent life is hiding / communication is dangerous

Intelligent life inevitably loses interest in outside contact

Natural disasters destroy intelligent life

YES

YES

YES

YES

YES

YES

YES

YES

YES