Mental landscapes: Magnificent wiring

For a functioning brain to develop from its embryonic beginnings, so much has to happen and go exactly right with exquisite precision, according to a just-so sequence in space and time. It's like starting with a brick that somehow replicates and differentiates into a hundred types of building materials that also replicate, while simultaneously self-assembling into a handsome skyscraper replete with functioning thermal, plumbing, security and electrical systems.