Some people are just dumb, and they don’t recognize it! They know themselves to be of passable intelligence, and so they get mad when you have to correct them on things.
I normally try to be patient, however sometimes I lose patience.
For this lockdown I have been staying with our brother and his partner, and for the most part it has gone okay. The partner is a smart lady, however our brother is not honestly bright, so the two of us get into a lot of arguments. The other day the two of us had a shouting match because he mistakenly thought there was an issue with the a/c system in his house. See, every day, the front room would start heating up, to the point where the two of us couldn’t even stay there and watch TV. It would feel as if someone turned the furnace on, however when the sun finally set, things would go right back to normal. I tried to explain to him that it was not really an issue with the AC unit, it was entirely the doing of the insulation in the walls and the ceiling and their lack of insulation! When that part of the house would get hit with direct sunlight every day it just started heating up. The A/C could not stop it, however without enough insulation in the walls, the heat transport would continually pull the cooling out. This gradually heated up the walls until the sunlight went down. If the two of us couldn’t get more insulation in the house, then we just needed to get more shade on the front of the lake house instead to help cool it down. Either that, or we would just have to use the A/C in another room until the sun finally went down.