In the wake of Las Vegas shootings … this chart seems to indicate the “gun” issue is not highly correlated with the problem. Gun laws, to quote a Harvard study, are an inelastic means of controlling gun violence and the violence isn’t very well correlated with where the guns live. (and given the existence of those who “collect” stamps, guns and other things, just “counting” guns is a poor metric)
David Brin in his series of books of the “Uplift Universe” postulated among other things a push (required for species survival) to understand human sanity at a level beyond our current ability. In this universe, a psychotic shooter could, in inter-species/intra-galactic polity, damn the human race to extinction or slavery instead of just killing a number of dozens of people. For that reason, psychological tests were developed to insure that any human (sapient actually) going off planet had to be known, certified, and understood to be, well, sane. One might wonder if that sort of test or understanding is possible or plausible.
It would be more useful if, in the wake of these sorts of incidents, cries of “guns are the problem” and “guns aren’t the problem … instead pointed out that people going bug-nutz crazy is the real problem and that our treatment of the mentally ill in our society is just slightly, ever so slightly, better than debtor prison was in the 18th century as a way of treating insolvency.
So. Lets’ talk about the psychosis/depression/insanity crises not the gun one.