This example holds true imo. There is a world of difference between a 2:10 marathoner and a 2:30 marathoner. Same as a 4 min miler and a 4:30 miler, etc. Becau

This example holds true imo. There is a world of difference between a 2:10 marathoner and a 2:30 marathoner. Same as a 4 min miler and a 4:30 miler, etc. Because of diminishing returns, improvement can still be seen as potentially some kind of multiple in many skillsets.