> (This is fairly normal in cpus. Picture 8 regular fuses. If you read across them, you’ll get 0xff. Now blow the first four fuses and read again. You’ll get 0xf0. Here’s the catch. You can’t “unblow” them. With real fuses, you’d replace them. If they’re inside the cpu, you replace the cpu.)

this made me think of the pencil trick from the earliest days of socketed athlons. not exactly the same I know.