
You can think about Heisenberg's
uncertainty PRINCIPLE...
The Big Bang Theory Season 4, Episode 20

should avoid espousing
the PRINCIPLE
The Big Bang Theory Season 7, Episode 22

The anthropic PRINCIPLE states...
The Big Bang Theory Season 6, Episode 1

...most accurate visualization
of a scientific PRINCIPLE.
The Big Bang Theory Season 1, Episode 6

That's sort of like
the uncertainly PRINCIPLE.
The Big Bang Theory Season 4, Episode 20