taking a sequence of data and turning it into a bit stream where the bits greens length is something like the entropy of the data times the number of symbols and so I'll just jump right in and describe how this thing works and so so let's say this source that sorts of things that we're trending odhh is just two symbols it be each occurring with probability 1/2 and so you might imagine that the the naive way to code stuff like this is to just assign a to the number 0 and B to the number 1 and then you just get a string