This is a special post for quick takes by Michael Thiessen. Only they can create top-level comments. Comments here also appear on the Quick Takes page and All Posts page.
When people argue many AIs competing will make us safe, Yud often counters with how AI will coordinate with each other but not us. This is probably true, but not super persuasive. I think a more intuitive explanation is that offense and defense are asymmetrical. An AI defending my home cannot simply wait for attacks to happen and then defend against them (eg another AI cuts off the power, or fries my AI's CPU with a laser). To truly defend my home, an AI would have to monitor and, importantly, control a hugely outsized part of the world (possibly the entire world).