One of the ideas President Trump is considering to fix school shootings is adding armed guards to every school and that is the most functionally impossible thing that's we could try to pass right now because MATH. Here come some well researched numbers. THREAD
There are about 100,000 public schools in the US right now. An armed guards makes about 40,000 per year. We're already at 4 Billion annually. That was fast.
I stopped counting the exact cost a while ago, but we were at 150B annually by that point.