mare5x

The music reminded me of Super Hexagon.

So people that are good at their jobs should be kept on the brink of promotion for as long as possible?

Same here. The best time to debug code is before writing it.

Similar situation: a process queries the operating system (CPU scheduler) to find out if the process is currently being executed on the CPU.

This is a great resource. I used it along with another practical tutorial (https://www.thonky.com/qr-code-tutorial/) to complement the official QR code standard when I wrote my own QR code encoder in Common Lisp: https://github.com/mare5x/LispQR