(I sell cable TV packages, and talk the caller through set-up. Our service offers a service where you can record programs and pause and rewind TV.)

Caller: “And can it fast-forward live TV?”

Me: “Um, no, it can’t.”

Caller: “I would have thought it could, since it can pause and rewind live TV.”

Me: “Fast-forwarding live TV is a bit different.”

Caller: “Forget I said that.”