It is a horrible mess. The systems we use have no way to safely delegate control over some portion of a computer to a given task. We have to trust that things w

It is a horrible mess. The systems we use have no way to safely delegate control over some portion of a computer to a given task. We have to trust that things work as intended and just blindly trust code we didn't write. Imagine if electric power happened the same way. We'd be hiring electricians every time we wanted to "install" a new device, like a light or fan. It would require an inspection by the local power plant, and a state inspector. We wouldn't have outlets or fuses. Houses burning down would be commonplace. It was the same, but worse, with steam power. Horrific accidents were an occupational hazard.