distribution of our possible states of the world okay let's take a couple minute break here and then let's look at Bayes filters and gaussians actually much more I did it's not as unstable for alright let's restart any questions about the first half yes so I've in a lot of things we assume a first-order Markovian system and kind of touching on the example that you were talking about at the end have you seen in practice whether maybe the first-order Markovian assumption isn't appropriate but a certain like n step Markovian assumption is appropriate