The x-ray image was incorrectly misdiagnosed, because... What type of thing should come here?
... it didn't look like the other class. ... it didn't have this weird smudge thing on the top left in which case usually there should be a little hazier blob in the middle, except when the pointiness of the thing that is to the right of the brightest blabla...
You get the idea, my description is even exaggerating the nameability and describability of these structures. You'd get a long and complex description at best, because simple models don't work for pattern recognition. But even if you made sure to just use well understood features like edge thickness, angles, sizes of connected components etc, how would a boolean formula of a hundred such terms be helpful in court or wherever you want to use these explanations?
