spend a couple more minutes if people have some questions didn't want to ask as we wrap up here anyway also value of lecturing and I also did a bunch of questions in the chat to be able to do that in parallel to you making progress on lecture I had a question about ans so I still don't see what the connection between like oh it seems like ans was just like a little add-on to this lecture like what's the connection feels like I don't I don't really see why we need ans like why you can just use another yeah it's a there are ways of