People sometimes mock the idea of "rockstar" developers, but this is one of the things that separates the merely good from the great. A developer who can jump

People sometimes mock the idea of "rockstar" developers, but this is one of the things that separates the merely good from the great. A developer who can jump up or down four levels in the technology stack with ease is an entirely different species, when compared with someone who lives at one level. All abstractions leak.