At one point in my life, I worked for a decade around IT people, hardware geeks, and code-writers (I was outside of this entire sphere myself).
There are particular talents that each group has, and successful types have certain particular skills. With code-writers...they have to have a sense of logic, and visually see a beginning and end to the product code. If you can’t think in that fashion...you will never produce anything of value.
It’s like a repair technician who is assigned to a item-failure, and they can rationally draw a line of problems (more likely to less likely) and not waste time. It’s not a skill that everyone has.
These political dimwits who think you can take 800 unemployed coal miners and make technicians or code-writers out of them...probably need to be sent into ghetto areas to clean up the mess there first.
I believe much of mining is highly technical. If a mine shuts down, engineers, technicians, and heavy machine operators get the boot. I doubt there is much unskilled labor involved these days.
Somewhat analogous to making use of a 3D printer. I have used a couple for the last 5 years or so to create items. I decide on a need, then design the object, and build it in a CAD program, determine how best to build it, and refine it if needed for my purpose. Some people can't do that, and rely on downloading objects others have designed. This can also be true of carpentry, another hobby of mine. If you have a sense of logic, you can apply it to different job categories to accomplish a finished product. If you don't have that sense of logic, you more or less need to be told how to work on a limited portion of the end product.