They never get around to answering the very simple question. They get all caught up in all the permutations and iterations and other possibilities, many of which have zero to do with anything. It's as if you give them a simple melody and they go off on a riff to places unknown and not useful.
Is it a strength or defect to analyze a thing to death before you even deal with what it is in its simplest form? Is that a sign of high intelligence or confusion or a lack of ability to communicate? I dunno.