I would like to see evidence that style consistency matter __at all__. There is so much dogma around consistency being the most important thing, but nobody ever

I would like to see evidence that style consistency matter __at all__. There is so much dogma around consistency being the most important thing, but nobody ever backs that claim up with evidence. Is there any real research which shows that consistency actually leads to either 1) better developer productivity or 2) a lower defect rate?