Evolution isn't an opinion, it's fact.
The Big Bang Theory Season 3, Episode 1
(STAMMERS) Our child could be
the next step in the EVOLUTION of mankind.
The Big Bang Theory Season 10, Episode 8
We've known about EVOLUTION since 1859.
The Big Bang Theory Season 10, Episode 12
...trying to teach EVOLUTION
to creationists.
The Big Bang Theory Season 3, Episode 1
You know what?
I used to be a fan of EVOLUTION...
The Big Bang Theory Season 8, Episode 20