That's a good point. If a "skewed distribution" exists, one might use this point as an explanation. I would be really interested in knowing whether such a "skewed distribution" exists. However, how would one go about constructing such a distribution? Which characteristics of drivers should one consider? Extrapolating to other avenues like teaching, construction work, sales etc. can one define variables to measure such a "distribution" of competence?

That's a good point. If a "skewed distribution" exists, one might use this point as an explanation. I would be really interested in knowing whether such a "skewed distribution" exists. However, how would one go about constructing such a distribution? Which characteristics of drivers should one consider? Extrapolating to other avenues like teaching, construction work, sales etc. can one define variables to measure such a "distribution" of competence?