The figure is somewhere above 0%, but certainly not zero. For example, haven't you seen the crap blaster 9000 infomercial at 2AM on a Tuesday? You connect that bad boy to a fire hydrant (vendor liability disclaimed), pull the turbo-diesel engine rip cord, and wear a full body bio-hazard suit with air supply (suggested). Not for use with some sets. Batteries not included.

Ahh, sweet memories; sometimes they overflow.