Unless a show is said to be live, it is filmed, edited, and shown, the season finally could be live, or an episode if they list it that way. But when you watch a show, and you see scenes from different rooms or locations, it has been edited, and then show at the appropriate time. Survivor has never said live, I do think maybe the finals of some shows are live, I dont remember which one. Even though its a reality show, that means, people are not rehearsed and do not repeast scripts, but they still shoot lots of footage to make the show interesting.