[ndsipa_pomu]

> OTOH, there are definitely jobs which get conflated as having a low barrier to entry (for the average person) but actually take many years of training to be able to get a typical job in

Isn't the barrier to entry due to the jobs not allowing for mistakes? Cleaning has a high tolerance for mistakes (e.g. missing bits, leaving streaks on windows etc) and so it's fine for an inexperienced cleaner to learn from their mistakes whilst doing the job. However, people would not be happy for a lawyer or surgeon to be learning from their mistakes whilst working - they are expected to already be competent and mistakes are generally very damaging.

[zamadatix]

Yeah, I'd say a job "does not allow for many mistakes" and "requires skill in the labor" are two ways of saying the same thing. If it's alright to do the job completely wrong most of the time and it still make sense to be hired then the base position in that job does not have a skills requirement.