Yep the esteemed Mr Coggles (who holds a doctorate in shit so he does know what he is talking about) is right to point out that if you start bandying research around, those of us with a scientific/academic leaning will be interested in the minutiae of the size of the data set and the inclusion/exclusion criteria because that seriously affects the validity of any conclusions offered. I know it is not as much fun as jumping on the "pop is homogenised rubbish" bandwagon.

I also agree that we humans are creatures of habit and this goes some way to explain why we may tend to like things that fit a certain pattern and consistency, whether its beer, cheese, murder ballads or 12 bar blues.