
but by using a computer to solve
COMPLEX mathematical problems.
The Big Bang Theory Season 11, Episode 9

Why?Well, it's an
emotionally COMPLEX issue.
The Big Bang Theory Season 12, Episode 22

...is a COMPLEX socio-economic activity...
The Big Bang Theory Season 3, Episode 3

...about COMPLEX scientific ideas.
The Big Bang Theory Season 4, Episode 20

a massive inferiority COMPLEX.
The Big Bang Theory Season 11, Episode 15