I recieved a very fine umbrella as a gift once (James Smith & Sons. solid stick) and the joke around the house became "pop or fop?" As in what was the percent c

I recieved a very fine umbrella as a gift once (James Smith & Sons. solid stick) and the joke around the house became "pop or fop?" As in what was the percent chance of precipitation (p.o.p) that excused carrying the umbrella that day whereby I would not just be a fop carrying the umbrella as an accessory? It was so fine, I'd want to carry it for anything over 50%, but I knew it was being a bit dandyish, so a decade and some later, nowadays I don't bring it with me unless it's actually raining. Perhaps a future feature of this app would be not so much whether to carry an umbrella on a given day, but whether it is appropriate to carry a certain umbrella. I'm sure the owners of JS&S would have some insight!