Exactly. It's the same with school shootings. There are measures you can take—limiting access to guns, better availability of mental health services, making schools less shitty—that can reduce the frequency and severity, but you can't predict when a particular individual is going to go off. Everyone, after the fact, scrambles to come up with some way of having it not have happened, which seems to always amount to increased security. But as we've seen, increased security means and does very little.