Trying to collapse high dimensional, complex phenomena onto a single axis usually gives one a fake sense of certainty. One should avoid it as much as possible.

And yet we report gun deaths per year, smoking rates, sea warming, etc. etc. The error isn't in producing or considering an aggregate result, but in ignoring where it came from. Since this is an internet forum and not a policy think tank I think that error is largely moot.

Or put another way: it was a simple question that the ggp can answer or not as they choose. I was just curious for their perspective.