If we're coworker, I'm paid to produce code, and constant questioning does kill productivity because with age I'm slower and slower to get into the zone.

Two questions are about enough to kill a morning productivity.

Have a coworker that does that amount of non work related question chit chat every chance he gets, and it's a mistery to me how he gets employed with those googleable-in-five-minutes knowledge gaps.

Meanwhile it makes the working environment a nightmare for me, becose having the brain constantly picked and drained is extremely atressful, if you also have to, you know, produce results.