In theory you could have rigourous guidelines that span pages and cover as many edge cases as possible. That's besides the point of the article. Finding an edge

In theory you could have rigourous guidelines that span pages and cover as many edge cases as possible. That's besides the point of the article. Finding an edge case in a definition mentioned in passing doesn't really give you a lot of ground to criticise the statistical approach. It's just nitpicking which distracts from the overall point.