But, Jonner, me lad (or las, as the case may be!), you missed my point (maybe). My point was that attaining a car that produced CO was the by-product of car-building, not the by-product of car-ness. We can certainly build electric cars that don’t emit CO, etc,
To answer your other question as to how we know which one is the right one, I admit that at times that is tough. But, remember Aristotle’s syllogism: “
What ever in nature occurs always or at least for the most part happens either by chance or. . .” Extrapolate on that and you get, “Whenever an artificial thing is used always or at least for the most part . . . etc.” Or, when it is the known
intention of the maker to make a thing for a specific purpose, we be pretty certain that that’s its purpose.
A three-celled flashlight is sometimes (though rarely) used as a defensive/offensive weapon. But, one can easily “see” that that is not what it was made for. The inventor’s
intention was that it be used to provide a light source where and when needed. Simply because humans are ingenious enough to pick up whatever is handy to use for another, accidentally imposed purpose, does not, as one can see, commit that thing to that use in a preponderance of instances. (Unless, it turns out to be better than the so-called billy clubs on the market!)
Don’t confuse “property” with “purpose.” The fluid property of water permits it to resolve itself into
accidents. (By the way, that’s what they make those basement water pumps for; in case you were confused as to their purpose.

)
I know. I’m still laughing.
God bless, Merry Christmas,
jd