Is evolution based on empirical science?

[Lafiel]

huaxiong90 said:

Lafiel said:

and so will gravitation until we find the cause I guess

until then non-believers are free to fly away

Difference: Gravitation is substantiated. Strongly. VERY strongly.

why ? because we don't fall off this rock in space?

we never discovered the elementary particle or wave/energy whatever that actually causes it