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Because the kid with the learner's permit can ask the adult for help if they are confused about what to do, rather than having to simply pick and option and go with it.

Same reason most television is a cesspool: low-budget, over-the-top drama is cheap to produce and appeals to the lowest common denominator. If you want to watch good tv, you have to go find The Wire, and if you want to read good twitter, you have to do the same.

As someone who studied music throughout school and played for quite some time, there is clearly be something innate about perfect pitch. I think a good allegory is people who can multiply giant numbers in their heads easily (previously referred to as "idiot savants" though that term sounds ridiculous now). While the rest of us can certainly practice and improve our multiplication skills, we'll always be missing some connection that allows them to do so effortlessly.

The link below is a study which shows that the distribution of pitch recognition among the general populace is bimodal (you have to scroll down a bit). This matches with my experience that, irrespective of practice, people either have it or they don't.

https://www.pnas.org/content/104/37/14795

The solution for the excess supply issue is energy storage, not mining bitcoin. I've worked in clean energy for years, and no energy expert is advocating digital currency mining + increased energy production as a method for meeting demand peaks.

IMO the smartest thing you can do early in your career is get enough exposure to figure out what you're really good at. In my case, working for a startup for a few years exposed me to all parts of the business, from configuring modbus connections to making product decisions and managing a team. Some of these things sounded interesting until I was working on them every day; others seemed boring until I really dug in. In any case, I came out of it with a clear understanding of which career path I wanted to pursue, without all of the what-ifs that come with a lack of exposure.

If you find your niche, the money will come. If you find your niche, the fulfillment will come. I wouldn't recommend chasing either until you have a sense of what kind of work makes you feel competent and accomplished at the end of the day.