@KingOfWhiteAmerica @transgrammaractivist @Shadowman311 @Terry @weaf Cold war propaganda is just that. The big word in MAD is the M. If single nuke makes fallout, and it does, a lot of nukes make a lot of fallout. Going back to the exponential thing, extra background radiation isn't great but it's fine until it hits a problem level. Suppose an area is elevated but not immediately life threatening from a nuke hitting it, and remains that way for about 20 years. Two nukes worth doesn't keep it at "slightly dangerous but a bit worse". The scattering effect and winds blowing irradiated particles make it a lot worse to have two or ten vs one in an area even several hundred miles in diameter.