That's a good one, Jochen!
In my perception, an "incident" is when a blondie steps on your toe with her spike heel -- painful of course but still manageable. But if she runs over you in her car, that'd be an "accident". Having, say, three
Linuses around would be a complete disaster to the image of the operating system in question.
And also, behavioral patterns tend to breed by airborne routes rather than, er, frictional mechanics. Hence Sparta and the cliff: "Volare qui potest, ne serpat
" (lat.) or, by contradiction, "Those born to creep shall never fly".