
...the fingerprints of string THEORY
in the aftermath of the big bang.
The Big Bang Theory Season 1, Episode 1

♪ I'd be string THEORY
without any string ♪
The Big Bang Theory Season 7, Episode 6

Previously on
The Big Bang Theory...
The Big Bang Theory Season 12, Episode 15

Chaos THEORY suggests that
even in a deterministic system,
The Big Bang Theory Season 7, Episode 16