Criminal Minds2005

Alex Blake:
[sees Reid writing formulae] I always wondered what Spencer Reid's grocery list looked like.

Dr. Spencer Reid:
It's actually Riemann's hypothesis.

Alex Blake:
Which is?

Dr. Spencer Reid:
It's a mathematical conjecture from the 19th century that states that the Riemann Zeta function zeroes all lie on the critical line.

Alex Blake:
Yeah, I get it.

Dr. Spencer Reid:
I noodle it from time to time. It sort of helps me unwind, you know?

Alex Blake:
Well, since we're on the subject of unwinding, how'd your date go?

Dr. Spencer Reid:
Uh, had to cancel at the last minute.

Alex Blake:
Oh? You did or she did?

Dr. Spencer Reid:
Um, sort of both did. But... it's fine. I talked to her this morning and things are good.