Left vs right hand thread wheel studs.
Ok. Here is the evolution of the left hand wheel nut.
Back around 50 thousand BC when OGG invented the wheel, he only made one and didn't see a need to invent it.( the nut ) On the 3rd day of pushing his new stone wheel around with a big stick, it took off rolling down a big *** hill. And he thought to himself F that ,that thing is heavy, dumb *** invention anyway. It can stay down in the creek.
So centuries go by and some Roman guy finds this round stone wheel thing in the creek and thought to himself, wow this is interesting. So this Roman guy sits on a rock, with his chin resting on his fist starts thinking of all the possibilities of what he could do with it. (They made a statue of this guy by the way.) To fricken heavy to take back to town. I think I can make this out of wood and make two and put them on a chariot for Julius. So that's what he did. Well unfortunately he didn't know and used right hand nuts on both sides. Long story short, wheel fell off , Julius broke an arm and ordered to lop off the thinkers head.
The wheel idea lay dormant for some years till Darwin got wind of the wheel and gave it some thought and came up with the" theory of revolution " which he invented the left hand wheel nut. And finally the wheel thing took off. It was all rolling along smoothly till the 1970s rolled around and the US government started making all the car makers to hire Affrimative Action. Then it all got screwed up again with the left on right crap. So someone decided to make em all right and just make sure to tighten em.
You can quote me on this it is the gospel.