I've worked in FinTech for a while and I remember one of the old timers at an investment bank trading floor telling me that the desks used to have ashtrays buil

I've worked in FinTech for a while and I remember one of the old timers at an investment bank trading floor telling me that the desks used to have ashtrays built into them. They were right on the edge of the desk so the cleaning people could just sweep th ashes into a trashcan.