I think he counting his loss at $100 million is not realistic. I am assuming he calculated this number by the amount of equity he would have vested after Facebo

I think he counting his loss at $100 million is not realistic. I am assuming he calculated this number by the amount of equity he would have vested after Facebook IPO. To cash that amount he probably would have had to keep working till now. And if you are an entrepreneur type its a tall order. He should get rid of this feeling of loss of $100 million which was really nothing more than a promise.