We must have different priors regarding OP's specific example. I think that "building a kitchen" would require a hell of a lot of skill, all of which needs to be honed over a decent period of time. I'm 100% confident that given an empty room, building materials, tools, and some appliances, I would do more harm than good.
I'm not saying experience is irrelevant, I'm saying you can teach somebody the skills to use tools and the proficiency to build a kitchen and he would afterwards be able to build a kitchen, even though his experience is very little.
I'm not saying it will be the best kitchen in the world, neither am I saying the teaching process will be super fast (it depends on teacher and pupil), but I am saying that it is first and foremost not about the age and experience of the trainee, who then later attempts to build the kitchen.