
Assuming that's a VALID reason not to go,
which it isn't...
The Big Bang Theory Season 2, Episode 23

...where a tray of flatware
on a couch is VALID?
The Big Bang Theory Season 1, Episode 2

...scientifically VALID protocol
that will make our lives better?
The Big Bang Theory Season 3, Episode 3

All desires are VALID
to a man with a full purse.
Game of Thrones Season 1, Episode 5

You know, if this experiment is going to
be VALID, I suggest a neutral environment.
The Big Bang Theory Season 10, Episode 4