"By analogizing facial recognition to plutonium, I want to add two broad points to an increasingly lively debate about the risks of facial recognition technologies. First, facial recognition technologies, by virtue of the way they work at a technical level, have insurmountable flaws connected to the way they schematize human faces. These flaws both create and reinforce discredited categorizations around gender and race, with socially toxic effects. The second is, in light of these core flaws, the risks of these technologies vastly outweigh the benefits, in a way that's reminiscent of hazardous nuclear technologies. That is why the metaphor of plutonium is apt. Facial recognition, simply by being designed and built, is intrinsically socially toxic, regardless of the intentions of its makers; it needs controls so strict that it should be banned for almost all practical purposes."