It was a good question.
Standing there, dripping wet from freezing rain, O'Keefe pointed out that with such lousy weather and cold subway platforms and packed subway cars and overheated apartments (but never when you wanted heat), it was hard to know what to keep on and what to take off at any given moment.
Was there ever room in rush hour to hold one's coat on one's lap? Did coats get fatter since we were kids sitting in our polite wool coats on the IND line? The puffed coats we now all seem to wear make us look like packing peanuts in a box.
What about taking shoes off at friend's doorways? I remember taking off boots if the weather was awful, but not other times. Now custom seems to dictate all kinds of footwear taken off in all kinds of weather which also seems to dictate wearing socks or feet not horrendously shabby.
There seemed to be no answer except to overheat or strip.