Well, what I did not get across is that, although working could good if one needs it or, better still enjoys it AND continues to learn new stuff, it is using the brain that prevents it from deteriorating. Are there any musicians with dementia? If there are, it probably means their music atrophied first - then the brain. The brain is the ultimate in use it or lose it.

Anyhow, you guys are all delightfully nuts. Clearly demented in the best ways!