We’ve all heard that hindsight is 20/20. I’d have to agree, but in my case, that clarity might be closer to 20/15 or 20/10. Looking back, the clues were so glaringly obvious! At the time, though, the thought that my bright, energetic mother might be showing signs of dementia, never even passed across my radar screen. My parents received a hand-me-down computer from one of their granddaughters. It was their first experience with a computer and I must say, Mom, who was in her early eighties, learned the basics of computer use, including how to e-mail, without much trouble. Dad, nearing 90, was mostly interested in learning how to play…