Do we know what the THC levels are in (1) drivers who didn't die, and (2) the population in general?

It could just be that 40% of the population is over the limit on THC all the time. Unless we can compare this against something else, and we can somehow normalize the comparison for other factors like age, I don't know how we can use the data.

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cogman10 a day ago | parent [-]

This is a knowable thing, it just needs to be studied (I'm actually surprised it's not been TBH). Give people a standard set of coordination tests and then draw their blood to see what the THC level is.

	▲	seanmcdirmid a day ago \| parent [-]
		If we were just interested in outcomes (in an accident or not), we should just be measuring that. But I guess if we can’t measure that, a litmus test is better than nothing.