Not all doomsday predictions are Malthusian. Some doomsdays might be possible because things change slowly in one direction in such a way as to inhibit their ea

Not all doomsday predictions are Malthusian. Some doomsdays might be possible because things change slowly in one direction in such a way as to inhibit their easy reversal. Some doomsdays might be processes that are incredibly slow, thus precluding rapid change by definition.