Digression

Digression is something that writers do when they want to give extra information about a subject when that info would not normally fit into the main subject area. It is akin to setting off from New York to drive to Memphis, but stopping off to take in the Grand Canyon on the way, not to mention every stall by the side of the road that sells watermelons.

It’s worth digressing when the extra thing you have to say is interesting to your reader. For example, if I set out to tell you about my favo...