Agile Software DevelopERS

De Luca's Law says that Managing software developers is 20% technology and 80% psychology. Dale Carnegie believed it was 15/85. On my bookshelf are half a dozen Agile books. All are about Agile Development, Agile Management, etc. None are focused on Agile Developers - on how to improve your agility as an individual. Conway's Law says "An organisation is constrained to produce designs which are copies of the communication structures of the organisation." Can this law be extended to consider agility?

A design cannot be more agile than the developers who designed it.

Intuitively it seems a reasonable idea. If XP aims to improve technical practices, and Scrum to improve management practices then perhaps it's time for a movement aimed at improving personal practices?