space is because in a large but they infinite States build infinitely many splits well there's always more stuff you haven't seen so you need a different way of measuring what makes something new versus something already may be understood so one big breaker in the space wants to look at using generic model in this case a pixel CN n for density estimation so the idea here is you planet our game or the agents playing at target you want to measure how often has the agent been in the stick but if you'd never special