15 Minutes?

By my math, if only one person can be famous at a time, everyone should be famous for more like 39 seconds. That's probably a bad assumption, however, since the Earth can clearly support more than one famous person at a time. It goes to 13:20 if you assume 20 people at a time. That averages to 1 famous person at a time in the US, but I'd say the US can support 10 famous people at a time at least. This means that each of us can now be famous for over 2 hours! I propose we keep 10 people on TV at all times, swapping out the one who's been there the longest every 13:20.