Masters of Merit / Learning by Proximity
In praise of the unglamorous parts
The years spent preparing, cleaning and repeating are where the foundation gets laid.
Every craft has a body of work nobody wants: the preparation, the cleaning, the repetitive stage that produces no visible result, the tasks handed to the newest person because they are dull. This work is routinely described as paying dues, which frames it as a toll rather than as training. It is training. Doing the same preparation several thousand times teaches the hands what the material does, what it looks like when it is right, and what small deviation predicts a problem later. It builds the perception that later decisions rest on, and it does so at low stakes.
There is a limit to this argument and it should be stated. Unpleasant work is sometimes just unpaid labour dressed up as apprenticeship, and some arrangements exploit that ambiguity thoroughly. The distinction is whether the learner is getting exposure and correction in return, or only getting used. A person doing the dull work within arm's length of someone excellent, with their output looked at, is learning. A person doing the dull work in a back room for years with nobody watching is being used, and should leave.
Where the arrangement is honest, the length of it matters. Skills that involve material and the body seem to require an extended period of low level contact before the higher level work is even legible. Compressing that period tends to produce someone who can execute the visible steps and cannot tell when the situation has changed. That is the difference between someone who has learned the procedure and someone who has learned the craft.