Sequel to this market, thanks to Floris for pointing out that there wasn't any actual chaos theory in that one. Let's see if this one gets chaotic!

This market will close at a time chosen uniformly at random between one day after the market creation time, and the listed close time. It will then resolve to the 4*x*(1-x), where x is the price of the market 24 hours before it closes, as shown by the UI.