Instead of throwing something out, discarding it or destroying it, you put it aside, letting it mutate like a virus. Inevitably, it comes back to strike you harder. This time you are unprepared, you think you discarded it but it has a different form. It flies under the radar, it knows your weakness and goes straight for it. The Romans, after their battles with Barbarian tribes would leave all their weaponry and armour behind on the battlefield. Eventually, the Barbarians conquered them by learning to use their weapons, adapting to their tactics and attacking their Achilles' heal. Next time, just use a fucking shredder.
0% is also a percent.