Comment by p0nce

Many software positions do not account for the opportunity cost of learning job-specific knowledge, or soon-obsolete knowledge, making it hard to justify the investment in the long run. With pressure, the human capital will also erode faster, leading to a situation where more fresh blood is needed. Consequently a smart software company need a mechanic to maximize learning RoI for its workers, else the best choice for them would be to leave (even a job they appreciate). So called "accidental complexity" is almost always low RoI.