This is so true isn’t it? When you consider this, you can;t help but look at working memory as having the life time of an electric charge. It is there and it is gone. I think this is why so many people had such a hard time with the transition from 7 digit to 10 digit phone numbers. The time it takes to get it into memory n keep it long enough to recall and dial the number is just short enough that we often have to go back and look at the digits again.
Interesting on the uranium … funny how Memory works.