I personally believe that productivity differences depend mostly on the programmer's personality. Certain types of personalities will be more productive with st

I personally believe that productivity differences depend mostly on the programmer's personality. Certain types of personalities will be more productive with statically typed systems, others with more dynamically typed ones. If this is the case then the measurement problem becomes one of personality assessment rather than anything else, and even when we manage to get this measured correctly, because it's a personality issue, we'll still have people arguing cars or bicycles without facts being able to help at all (except to point that it's mostly a matter of preference so the discussion is pointless).