which is the measurement given the state to the distribution we want to take action which is one know whether the door is open or not or at least a distribution over that for the causal one it's really just a matter of counting frequencies you might have a physical model that makes it easy but often you just kind of just do a bunch of measurements so you see how often does a sense to read this or that as a function of whether the door is open or not and now I have my model let's do a concrete example we have we need to put