Sleepwalking with a gun?

More from Statistics Done Wrong:

One 1992 telephone survey estimated that American civilians use guns in self-defense up to 2.5 million times every year – that is, about 1% of American adults have defended themselves with firearms. Now, 34% of these cases were in burglaries, giving us 845,000 burglaries stymied by gun owners. But in 1992, there were only 1.3 million burglaries committed while someone was at home. Two thirds of these occurred while the homeowners were asleep and were discovered only after the burglar had been left. That leaves 430,000 burglaries involving homeowners who could confront the burglar – 845,000 of which, we are led to believe, were stymied by gun-toting residents.

That Americans must use their guns roughly 415,000 times a year while sleepwalking seems the only "sensible" conclusion.