They sure do in the universe where I got my electronics training. Maybe there still is a misunderstanding here. Each part will dissipate power depending on it's share of the load. When building networks using resistors of all identical values, each will be dissipating an equal amount of power, up to it's individual limit, say 12 watts. Each will handle 12, so if 4 resistors, 48 watts. 16 resistors, 192 watts. Sam