I didn't say all jobs, did I? You successfully listed (some) jobs that might take longer than 30 days to learn.
The thing about "unskilled" jobs, everyone seems to look down their noses at, is that they facilite the people doing the lofty jobs of: lawyer, doctor, c++ programmer, etc. Without them getting done for you you couldn't do what you're doing.
Can the brickie work without their "unskilled" laborer? Sure, but good luck getting you house built in a reasonable time.
I don't understand your point. Yes, there's a lot of unskilled jobs, possibly a majority of jobs. Far from everyone looks down on unskilled jobs, and nobody is saying they're not important.
The brickie's "laborer", I literally said it in the post you replied to; the person who moves bricks, makes up the muck, generally keeps the brickie supplied with materials.
The thing about "unskilled" jobs, everyone seems to look down their noses at, is that they facilite the people doing the lofty jobs of: lawyer, doctor, c++ programmer, etc. Without them getting done for you you couldn't do what you're doing.
Can the brickie work without their "unskilled" laborer? Sure, but good luck getting you house built in a reasonable time.