It all depends of course, but I tend to disagree. A requirement such as "A web interface to play the game of chess, but with all the pieces replaced by photos

It all depends of course, but I tend to disagree. A requirement such as "A web interface to play the game of chess, but with all the pieces replaced by photos of my family members" is fairly adequate if I were to make a Christmas family game. I am totally uninterested in specifying whether it is possible to have two white bishops on black squares. Also, I don't want to test whether my uncle's moustache is the proper size. I'd much prefer to iteratively build the game by prompting than by specifying thousands of details. It just seems the wrong way around.