I think mentioning "half" here was just an exaggeration to make a point. On a related note, I think it is perfectly possible that 70 % of all drivers are "bett

I think mentioning "half" here was just an exaggeration to make a point. On a related note, I think it is perfectly possible that 70 % of all drivers are "better than average". It's a mathematical tautology that only 50 % are better than median, but the distribution of driver skill does not need to be a symmetric distribution, so median and average can be significantly different. With things like IQ, the distribution is symmetrical by definition.