They do exist, think of this metric, bugs per line of code. Rock star programmers write fewer lines of code, but higher quality lines of code, and therefore hav

They do exist, think of this metric, bugs per line of code. Rock star programmers write fewer lines of code, but higher quality lines of code, and therefore have an exponential quality effect on the code base. Then think of how they help/influence others, that is the real 10x multiplier.