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This is a good question, and the answers are interesting.
My first thought is, "why not do it?" Take pool lessons or guitar lessons or a driving course or martial arts lessons or whatever. For some things, like wood working, YouTube has a lot of great videos (yeah, got to weed through the even more numerous bad videos), so things like wood working can be learned through videos AND practical experience.
Recently my clothes dryer stopped heating; the drum turned but no heat. I watched a few videos on dryer repair, then my son and I tore it apart. Turns out the dryer is old enough and the parts that failed are expensive enough that the solution is to replace the unit (fixing old washers & dryers can be a money pit). But our time was not wasted, as I know that replacing the unit is the financially correct solution. And we know how to disassemble a dryer and put it back together. [I don't foresee a lot of need for this skill, but we never know ...]
I have been in the same situation with a clothes dryer. When you take one apart you discover that there is very little to it.
2) motor to turn drum
3) thermostat unit
4) heating element
5) timer circuit
6) outer shell
That's about it. It's fairly simple.
Of course it is usually the heating element that goes out and getting to it is the worst part.
The only other issue is that you can determine that the heating element is the thing that is broken and not the thermostat.
You learn a lot and YouTube is so fantastic because you can take a look at what it will be like before you ever try it.
I've done this type of repair (YouTube) with a number of things.
Once my son's older vehicle suddenly "popped" and the PRNDL just slid around in the steering column. Uh oh. To YouTube!!
Discovered that it was probably the cable that connects to the engine.
Checked it and discovered a connector had just popped.
Took about 78 cents for parts and then some time to reach it and clamp it back on.
It's a lot of fun when you can fix things this way and you feel like a Genius-Hero!
I studied advanced physics also. I didn't quite understand it as well as I should have. That was many years ago. I came back to it last year and found it more comprehensible. I presume it took time for me to become accustomed and to accept the then presented new ideas. I have the belief that reading other authors is helpful but must admit have not attempted same. Kind Regards - Cheerio
This is one of those things I think everyone(who wants to improve anyway) dabbles in. I have over the years besides programming. I have dabbled in the following.
Photography - won a few awards called it good enough. The reward is awesome. The amount of issues whenever you shoot portraits can make the hardest programming problem a breathe of fresh air. Still I do love shooting senior portraits. Kids are awesome. They just want to have fun.
Woodworking - My dad was a very good woodworker. I am a decent hack at it. I have all the tools and the knowledge and some of the patience. More patience would be better.
Sports - Volleyball - Used to be good when I was young and could actually jump. Racquetball. Quite decent and still improving.
I have also tried my hand at glass blowning/bead work. Cooking(bread, grilling, smoking etc...) and probably a host of things I can't remember.
Next up. I would like to learn a language besides my native tongue. I would like to learn to draw and/or paint.
I am 63 years old and the last time I caught a fish was in 1996. Before that lots of trying but nothing.
This year I have purchased a Sea Eagle STS10 inflatable fishing boat with trolling motor, a nice fish finder, a couple of poles, and some lures/bait.
I live in Michigan and we have a lot of inland lakes for small fish like Bass, Bluegills, Crappie, etc.
I built a 100 amp hour Lithium Iron Phosphate battery for my trolling motor and fish finder.
I have been watching YouTube fishing videos all winter.
I am ready to catch fish (and mostly release). Hurry up warm weather!
Teach a man to fish;
You won't see the bugger for weeks!
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
Singing. I had excellent vocal music teachers back in high school so I know basic technique, breathing, etc. pretty well.
Until my stage fright kicks in. I can speak to hundreds (and have) with no problem. Ask me to carry a tune, and all that technique goes away. I even have a hard time singing the national anthem at events where that's a thing.
I have to replace the steering wheels in my cars every couple of years they're so traumatized by listening to me, as that's the only place my voice works .