EmpiricalRequires evidence

Knowhow clusters because learning is experiential, and that is why capability is unevenly distributed across the world rather than merely unequally funded. At the individual level, accumulating knowledge is difficult because learning is experiential: we acquire it mostly through practice and on-the-job experience, and books can accelerate but not replace hands-on work. Part I's test of the intuition is good: offered surgery by someone with five years in an emergency room and little formal training, or by someone who has read two hundred books and never held a scalpel, the choice is obvious. So people learn skills where there are already concentrations of people who have them, a machinist apprenticing in a machine shop rather than clerking and reading at night, which predisposes further learning to happen where related knowhow already sits.

Coordination architecture