I remember doing an interview in September of last year with a lawyer who did a lot of work for the cryptocurrency industry. It was clear already that there was "trouble in River City." In July 2022, two important crypto businesses filed for chapter 11 protection: Voyager Digital and Celsius Network. Voyager Digital was a crypto broker. Unfortunately, it extended a large unwise loan to Three Arrows Capital, a crypto fund. Three Arrows defaulted, and Voyager never recovered. So: why did Celsius Network collapse? You ask. Well ... Celsius Network was a crypto lending company that let users deposit their digital assets into a "Celsius wallet" preliminary to pledging them as security for their borrowing. The cause of its sudden failure is a rabbit hole I don't want to go down with you. But two quick points are observable from the surface: this failure was part of the more general cooling-off of crypto activity, in the manner that "hula-hoop lending" wo...