He makes a VALID point!
The Big Bang Theory Season 8, Episode 3
...scientifically VALID protocol
that will make our lives better?
The Big Bang Theory Season 3, Episode 3
That was a VALID hypo...?
What is happening to you?
The Big Bang Theory Season 1, Episode 1
It was sparsely sourced,
but I think the science is VALID.
The Big Bang Theory Season 1, Episode 3
That is a VALID point.
The Big Bang Theory Season 10, Episode 19