[fred cook]

is a terrible thing to waste! Many years ago, my mother bought my dad a small calculator to use at his office. One day when I was there, I noticed the calculator was nowhere in sight. I asked him about it and he pointed to a desk drawer. I asked why he wasn't using it and he told me that he had noticed that his ability to work numbers in his head was being diminished by using the calculator so he put it away. He could take a long column of multi digit numbers and add the columns as fast as he could run his finger down the page! Never knew anyone else that could do that as well! Don't think he ever used the calculator again!