Good advice for the system design level of abstraction in the other comments. But do try to remember, no matter what, everything is just a computer running some

Good advice for the system design level of abstraction in the other comments. But do try to remember, no matter what, everything is just a computer running some code and shoving some data around to various other computers or devices. We lose sight of that a lot and consider the systems we abstract as somehow different from a computer. Avoid it as much as you can.