In his article, he talks not only about humanizing the police genre, but he also riffs on the many tropes used by authors in mystery fiction. Among the many themes-and-variations he discusses are: Private Eye, Amateur Detective, Innocent Bystander, Man on the Run, Woman in Jeopardy, Guilty Bystander, Cop Story, and the Biter Bit.
Here are McBain's opening two paragraphs:
There used to be a time when a person could make a decent living writing crime stories. Back then, a hard-working individual could earn 2 cents a word for a short story. Three cents, if he was exceptionally good. It beat polishing spittoons. Besides, it was fun.You can read the whole article HERE at the New York Times website.
Back then, starting a crime story was like reaching into a box of chocolates and being surprised by either the soft center or the carmel or the nuts. There were plenty of nuts in crime fiction, but you never knew what kind of story would come out of the machine until it started taking shape on the page. Like a jazz piano player, a good writer of short crime fiction didn't think he knew his job unless he could improvise in all 12 keys. Ringing variations on the theme was what made it such fun. Getting paid 2 or 3 cents a word was also fun.