“A million dollars isn’t cool. You know what is? A billion dollars.” This now infamous line, delivered by Justin Timberlake while playing Sean Parker in the movie The Social Network about the founding of Facebook, has become something of a joking catchphrase in startup circles.And they are right, a billion dollars is pretty cool. But you know what is even cooler? A trillion dollars.To put it in perspective, here’s what a trillion looks like written out: 1,000,000,000,000.That is a big, big number. But apart from ancient net worth predictions of kings and emperors, there has never been a trillionaire in this world.Some have gotten close, like John D. Rockefeller, who was reported to be worth over $500 billion adjusted for present day inflation. The world’s richest man, Bill Gates, is worth only $78 billion. I say the word ‘only’, half-joking of course, because it is still such a small fraction of a trillion dollars.To reach a trillion dollars, we would need to combine the net worth of the top 37 richest people in the world. That makes the trillion dollar mark not so much of a glass ceiling as a distant asteroid many light years outside of our galaxy.