[3pt14159]

I've come to heavily discount these types of studies. What makes an expert? What was the sample size of experts? What was the non-expert tool? Etc.

There is such a thing as having common sense based on thoughtful life experience. Checklists and regressions help, but human beings are very capable of deep expertise and to pretend otherwise is silly. I expect a musician to be able to identify a violin from a viola.