that we're happy with the discretization so this guy's up to some position T you can discretize in two ways imagine you have a Gaussian excellents on the horizontal axis is a Gaussian distribution you can discretize on the x axis or alternatively and often more convenient you can discretize in the cumulative distribution so it still acts the cumulative distribution will run something like this and then this goes from 0 to 1 you can discretize here first of all lets you deal with the notion a just relies on X what were you gonna do with