combining Ritz back with arithmetic coding it's just sort of the popular recent thing to do is to combine bits back with ans and in the reason we do it is because you get a very clean algorithm that works very well so that's that's just them that was the motivation can't you use it sorry can't you use base back so do any encoding scheme yeah yeah you definitely can just particularly convenient because of the stack structure of ans and also because the NS does work well in practice um to use it with that social practical