MindzEye
Wayward Ditch Pig
Do you want more napkin math? It’s estimated one in 10 people suffer from mental illness. That would mean that there are 3.3 million people in the states with mental illness. Do you really think you’re going to prevent all of them from doing something like this? Not happening.
Answers like this amaze me.
You're not trying to stop all of the incidents (I've covered this already). You're trying to stop as many as you can with the easiest solutions available. This is how rational problem solving works. Go after the low hanging fruit first and see what impact that has.
The other thing of course is that every time you eliminate the access to a firearm for said ill person you potentially eliminate one of these incidents. Every time you even delay putting one of these force multipliers in their hands, you give yourself an additional opportunity for friends and family of the ill person to get them the help they need or failing that, get law enforcement involved.
It all starts from making access to weaponry harder for the mentally ill (among other subsets) and it's not nearly as difficult in function as you seem to believe. It requires the political will to actually do what the people want done. 97% man...97 ****ing percent are in favour of background checks. Start there. Low hanging fruit.