A Wall Street Journal article I read online contained this sentence: "Mr. Wheeler had been involved in a legal dispute with his neighbors who were trying to build a large, new home in a neighborhood designated as a historic preservation district."
The story was about Jack Wheeler, a former aide to three presidents, who was caught on video behaving strangely the day before his body turned up in a landfill. I'm hip deep in this fascinating story, and suddenly all I can see is that comma: "large, new home"? Really, Wall Street Journal?
Punctuation rules say to use commas between things called "coordinate adjectives." Even the people who don't know the term understand this. Most people would put commas between the adjectives in "It was a beautiful, stirring, memorable ceremony." Yet those same people would probably leave commas out of "He wore a ratty old green polyester sweater" — even though they may not know why.