You build it with your hands. Uptime drops you onto the floor of your own cloud provider, first person. Buy the servers, carry them to the rack, seat them with a satisfying click. Run the cable yourself: pull it off the spool, find the port, watch it lay across the floor with real sag. Power on. Sign your first customer. Underneath all of it is a real simulation. Every server, switch, cable and port is a live entity in a deterministic engine, not set dressing, not a bar filling up. When something breaks, it breaks because the model says it should.