Comments by readers on the last few posts

I do enjoy the comments I get and am grateful for them as I do learn a great deal from them. My guess on tennis players and their tummies seems to be confirmed by several commenters, a tennis coach and a Spaniard who knows what Nadal eats. Their diets will shorten their careers and leave …

My friend David Warlick gave me a great tip about searching the Web. Instead of starting with a huge search engine such as Google, start small. Pick an engine with a smaller database, such as Yahoo, and work through its directory, which is arranged by subject and sub-topic. Then, having identified one or two high-quality …