The producer or story editor would consult a list of all the episodes produced to date, and there was about a 95% chance he'd look up from it and say, 'Did it in Season Four' or whatever season it had been in. Sometimes, they'd say, 'Did it in Seasons Two, Four, Five and I have one in the works right now, same idea.'"
— Scrappy Days
—Phil Sandifer on Doctor Who, "The Monster of Peladon"
—Doc Oho on Star Trek: Voyager, "Endgame"