'The Big Short's Eisman says he's staying out of bitcoin BNN Bloomberg VIDEO SIGN OUT Famed investor Steve Eisman is drawing the line on bitcoin, saying he will not invest in something he doesnât understand. Eisman, whoâs primarily known for predicting the 2008 financial crisis as outlined in Michael Lewisâ book The Big Short, and providing the inspiration for Steve Carrellâs character in the subsequent film adaptation, said on Bloomberg Television Friday that heâs staying away from the highly volatile cryptocurrency as its value continues to swing wildly. âSteve Eisman does nothing with âBig Bitcoin,ââ he told