@coded_artist stochastic parasitism. It's illegal (for straight people) to go around deliberately putting parasitic worms in people, but it's NOT illegal to put parasitic worms in products and make those products available and letting random people independently think of ways to commit crimes with the parasitic worms.

How could predict that? Who could predict that a Japanese NEET would go on a parasitic-worm rampage? A reasonable person would never anticipate such a heinous action, therefore I'm not liable for arming Japanese NEETs.