course now this was pre Coursera days they actually physically mailed you DVDs and you would watch the lectures you know on your television you would do your homework you would email the instructor two weeks later he'd email you back your grades so that was the distance education that was back then I really found it interesting this idea so they taught a very early version of convolutional neural networks they didn't work well they were very narrow you know they're very shallow and we actually didn't program the so we're