Back in my late 20s and early 30s, somewhere on the way to learning how to write like a grownup, I learned the rules for constructing a paragraph. Here on the verge of 63 and retirement, I find that ...

Singer and Ivory mis-spoke in their Nov. 4 article in the New York Times (front page, above the fold): "... there is little rigorous evidence so far to indicate that using computers in class improves ...