How to Know What You Don’t Know

Curiosity may be another link to longevity.

A curious bike design from a creative mechanical artisan. Photo © Lloyd Lemons

One cloudy autumn morning a few years ago, I was visiting my five-year-old grandson in Colorado. For several minutes, I watched him aimlessly kick a ball around his backyard. He looked a little sad, so I set down my coffee and went out to try to cheer him up. Could a grandad find anything that might interest a five-year-old?