So You Flip The Common Torch Around

This google tech talk by Van Jacobson on networking is great.

Fun game: the video has closed captions in english. Watch for the phrase around 28 min. into it, where the captions that reads "so you flip the common torch around" and catch what Jacobson actually says. (Answer below.)

Was the caption written by a human or a machine? Was it proofed and edited?

.

.

.

.

.

.

.

.

.

.

.

.

.

.

Answer: "so you flip the combinatorics around"