One can imagine just walking in blind and getting an order to do X of something right now without any guidance.

OK, so what skill is needed to put Box A into Box B where Box B is three times the size of Box A?

What does the training involve?

Are there really people out there who can't do that (excluding reasons like physical disability)?

It might be better to call it low skill or something like that. The point is that there are jobs that can quickly be taught on the fly and have you productive in a few days, and that this is different from jobs that may require years of potentially highly specialized training. Working in a McDonalds Kitchen and in an Amazon warehouse are both much closer to the former than to the later.

The point is: While some difference in pay might be justifiable (to compensate for the lack of income during the time it took highly skilled laborers to get their skill and as part of a system of incentives to encourage people to pursue these careers), the magnitude of that difference in most places is very much not!

A full-time job should pay a wage from which a family can live. Doesn’t have to be great and doesn’t have to come with yearly vacations abroad, but it has to be enough for food, shelter, transportation and some entertainment. The problem is that we are very much not at that point any more. (Though this even extends to a lot of jobs that do require year-long training…)

I think a better word would be common skilled labour instead of unskilled labour.

The whole idea is it’s a skill that the majority can pick up, then people used it to mean it’s worthless…

You should visit my local mcd then, you'd change your opinion of unskilled not existing. Patty has to go between the buns? Nah. Forgot the cheese? Just throw it on cold and go. Order has to be remotely correct? Nah, custom orders get ignored. Fries have to have more rigidity than a 94 year old's boner? Nah, in fact here is some extra grease just seeping into everything from the fry box. Drink machine broken, everyone gets sprite, no refunds. We ran out of patties 4h before closing, are undercooked chicken nuggets okay?

Like I get mcd locations are usually franchised but holy fuck, when I pay $12 for a big mac meal and it looks and tastes like a vegetarian 4 year old built it, we have issues. A decade ago it cost $6 and was at least kind of decent food... Now it's just ass all-around.

You can rank anything, and piling boxes such that they don't fall over and kill someone is more dangerous with more expertise than cooking McDonald's burgers for 2min then doing it again.