

Cyou count to 100? Learn quantum physics, compute the odds for each ball, and win the lottery. Easy peasy. I don’t know why these kids can’t thrive here in the future.
/s
In all seriousness, learning c++ or any language is good advice but it may only be easy or even possible if you have a certain background of concepts. We tend to overlook those, and remember achieving a certain skill without the full picture
Firmware. The same things that Linux struggles to control any given phone fully with all the hardware that basically make a “phone” (gps, bluetooth, wifi, camera, accelerometers, etc.) for details, see https://wiki.postmarketos.org/wiki/Devices