Bitcoin's dramatic rise made it a hot topic in Davos this year, with a prominent market bubble researcher and a Swedish central banker expressing doubts about the cryptocurrency's prospects.
"I tend to think of bitcoin as an experiment," said Yale University professor Robert Shiller, a winner of the Nobel Memorial Prize in Economic Sciences, in a panel discussion Thursday at the World Economic Forum's annual meeting. "It's an interesting experiment -- it's not a permanent feature of our lives. We're overemphasizing bitcoin."
