Apparently, the best way to make people believe that something exists is to talk about it incessantly. Maybe write some books, make a movie or two, sing a few songs... and soon you'll have more and more people finding themselves unable to deny the existence of God, Bigfoot, male-friendly lesbians, or Apple's $137+billion cash pile. Oh wait, AAPL's cash pile DOES exist. Duh. Well, I guess it works with things that are actually real too.
(For the easily offended: I'm sorry.)