You can hardly call them rocks. Sure, they are Si based, but it’s so beyond purified and rearranged, that you should think of it as just any other chemical plating. I loved that my engineering degree covered a bit of the basics of computers, math and and logic, because I actually can conceptualise the different levels of computation and abstraction that are required. Starting from how theoretical logic works, binary logic gates, machine code, programming, protocols, networks, as well as the physics of radio communication and electricity. It’s mind blowingly hard to fully understand but I can say I don’t find it magical at this point.