Mm - hmm.
Right. So , right. So Basically um  what we don't wanna do is to for every single combination of E and V and A and every single letter E , s give a number
Mm - hmm.
because that 's obviously not desirable. What we wanna do is find some principled way of um saying what each of these is and we want it to be a valid probability distribution , so we want it to um add up to one , right ?