I think it's more like https://en.wikipedia.org/wiki/Four_stages_of_competence https://en.wikipedia.org/wiki/Four_stages_of_competence We are be born with some

I think it's more like https://en.wikipedia.org/wiki/Four_stages_of_competence https://en.wikipedia.org/wiki/Four_stages_of_competence We are be born with some functions at level 4, as well as acquire new skills without going through stages 1-3, otherwise there's no possible bootstrapping mechanism. At bottom, the reason is always "because the structures in my brain create a signal pattern". Understanding that is really the ultimate knowledge.