I agree with you in principle. However, I've had occasion to deal pretty often with elderly friends and family lately, and there's a clear problem there. Many

I agree with you in principle. However, I've had occasion to deal pretty often with elderly friends and family lately, and there's a clear problem there. Many of us lose a lot of our ability to think critically or recognize the latest scam flavor when we get into our 80s (or thereabouts). I've seen it repeatedly. People I know who are smart, who had careers as engineers, accountants, etc.