Math Photographic Memory

It was another typical night of father son doing math homework. These were cherished times to remember. These were particularly time consuming problems that I was working up on the white board. They were 12 problems of solving simultaneous equations. After 90min of work I come back from the board to see how Joe was doing only to see no work written down for the last 90 min. I asked WTF, response was something about he thought I would write it down later. Ya like I have photographic memory! 2hrs later at 1:30am I’m finally done re doing all the work again. Sigh