
No, it was a VALID hypothesis.
The Big Bang Theory Season 1, Episode 1

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

That's actually a VALID example.
The Big Bang Theory Season 8, Episode 21

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

That is not a VALID order.
Game of Thrones Season 6, Episode 8