And I'll have students come back from the high school... oh, I, I still use your little you know "simply before you multiply" and it just, all the little things and even students who come back from college will tell me that they're still saying the little sing-song things because they stick with you and you have something to grab on to out of the many file folders in your brain when you're doing these problems it's like oh that, that sing-song. 