because of what the other comment said and because this argument makes no sense > what you did is forbidden because it means your neighbors just have to heat m

because of what the other comment said and because this argument makes no sense > what you did is forbidden because it means your neighbors just have to heat more since their walls will leak heat to you if you don't turn up your heater, your neighbors don't have to heat more, the air in an insulator, some heat will leak in your apartment, but will also leak back to theirs, it will soon reach an equilibrium, unless you keep the windows open to cool down your apartment or turn on the AC. Anyway most of the heat that leaks is through the heating pipes in the walls, it would leak anyway, the temperature of the wall is always gonna be lower than the water in the pipes. So you are heating up your neighbors walls even if your neighbors are keeping the heating on.