Megan McArdle, Columnist

What Is Bitcoin Good For?

Perhaps it's a payment system. If so, it's inferior to Visa and grossly overvalued.
Source: EyeEm, via Getty Images

What is bitcoin good for?

This may be a question you’ve asked yourself, looking at the recent run-up in prices. Why, exactly, would you want to pay $18,000 and change to get your hands on one?