The Fermi paradox vs the “Undetectability Conjecture,”

[Phoonzang]

19. Never a fan of the Fermi Paradox because it assumes three things:

1.)Human motivations for alien species
2.)That we have the technology to detect them. We don't barring someone sending an intentional signal right at us. We don't have the capability to detect "leakage" like TV signals and the like.
3.)There haven't been alien visitations in the past (millions of years). Such evidence of visitation might easily have disappeared after such a long time.