The price of bitcoin has just passed $11,000. A year ago it was worth less than $800. Economists and commentators are thus increasingly concerned that this may be a bubble waiting to burst. We review recent opinions on the topic. The price of Bitcoin has reached and passed $11,000, from $800 just one year ago (Figure 1). The Economist’s Buttonwood’s notebook thinks that while the stock market has been trading at high valuations for some time, there is nothing like the excitement about shares that there was during the dotcom bubble of 1999-2000. That excitement has shifted to the world of cryptocurrencies like Bitcoin ... (full story)