This is a really excellent video. There is part where he has recordings of a clarinet and a guitar both playing the same note and slowly applies an filter to cut out the harmonics and the two distinct sounds converge. There is so much more to see in the video though and I highly recommend it.
There's a lot of truth to this statement in my experience. I just finished rewriting my homework for my operating systems course and the first version looks awful compared to when I rewrote a chunk of it as a state machine
I took a course that used that textbook last semester and I got the international edition for around $30, and it was the exact same book with less problems.
Personally, changing my sleep schedule day to day almost never works. I usually end up going to bed and waking up about the same time regardless. Once I start waking up at 4am, I will always end up waking up at 4am.
My introduction to computing course had us read about the Therac-25 and write an essay about it.
While code we write doesn't always have such dire consequences, it was an eye opener to me as a freshman in college. It definitely made designing software/hardware to never fail have a much higher priority on my list of priorities.
I had a similar thing happen, where I had this insane aspiration of dual majoring in computer science and engineering and music. After doing marching band my first semester, which was 6+ hours of work a week ignoring games, and seeing how hard the music majors were working, I realized how difficult that'd be.
I still do the occasional ensemble, but the time you need to commit to those courses are insane.
Andrew Huang's video on the harmonic series does a really cool dive into this