The silly season continues. Speculators are piling into the cryptocurrency space in the hopes of–sometimes very literally–making money fast. As I write this Ethereum’s value has halved since June but is still 20x since January. Litecoin is up 12x since then. Even Bitcoin has tripled, again. It seems like everyone now has an opinion on, and a position in, cryptocurrencies. And hey, if you want to speculate, and casinos seem too sedate and controlled to you, then more power to you, jump right...

Cryptocurrencies are booming beyond belief. Bitcoin is up sevenfold, to $2,500, in the last year. Three weeks ago the redoubtable Vinay Gupta, who led Ethereum’s initial release, published an essay entitled “What Does Ether At $100 Mean?” Since then it has doubled. Too many altcoins to name have skyrocketed in value along with the Big Two. ICOs are raking in money hand over fist over bicep. What the hell is going on? (eta: in the whopping 48 hours since I first wrote that, those prices have...