Then it invalidates your previous example. There's a difference between someone who gets vocational training on the job and someone who just decides they can c

Then it invalidates your previous example. There's a difference between someone who gets vocational training on the job and someone who just decides they can cook well at home so they deserve to be a chef. Learning at home can't replicate scale or timeliness. There's no substitute for a live kitchen, and all cooking / baking students spend PLENTY of time in live kitchens before they graduate.