I believe ern's comment was right on the mark. We have to remember that the elderly bring their own set of affordances to the table. They're used to thinking ab

I believe ern's comment was right on the mark. We have to remember that the elderly bring their own set of affordances to the table. They're used to thinking about things in a pre-computer world, and have to get used to the models of thinking (unnatural models, I must add) computers force upon us.