Do you understand
the CONCEPT of blackmail?
The Big Bang Theory Season 1, Episode 16
is an abstract CONCEPT...
Game of Thrones Season 1, Episode 6
so the CONCEPT of a bastard
doesn't exist.
Game of Thrones Season 7, Episode 4
It's proof of CONCEPT.
The Big Bang Theory Season 9, Episode 24
with the CONCEPT
that time is an illusion.
The Big Bang Theory Season 12, Episode 19