I think you are explaining how both lossy and lossless compression work without explaining how this does it differently. I can't read the article due to techni

I think you are explaining how both lossy and lossless compression work without explaining how this does it differently. I can't read the article due to technical constraints, but understand that e.g. JPEG has a lossy quantisation pass followed by a lossless encoding/compression pass of the result of the first stage. If they're reproducing bit-identical result to the input JPEG, it must be a (very good) optimisation of the latter stage. [How'd I do?]