I think I do agree with him about questions versus answers, though it is a careful balance. It can easily backfire, but a mystery laid out for the reader/player to uncover and piece together themselves is more engaging than a neat bow type finish. You just have to make sure to not only provide sufficient clues, but also actually have an underlying structure to uncover. I think JJ Abrams style empty mystery box stuff is garbage, but I don’t think that is what Sam Lake is advocating here.