Why Silicon Valley is going gaga for Bitcoin Cryptocurrencies are on a historic tear right now. And Silicon Valley’s infatuation with the industry explains a lot about itself. Should I buy bitcoin? As a technology reporter, the questions I receive from random people at birthday parties, say, or seatmates on a plane, are usually emblematic of what is going on in the digital world. (And, increasingly, the real one, too, for that matter.) Not too long ago, the predominant question…