Damn, that flowchart is pretty much the posterchild of how not to make a flowchart. Unnecessarily overlapping elements everywhere. It's damn near impossible to follow and I'm supposed to trust their design knowledge?

It's also just unhelpful. It's not even clear what many of the questions are getting at. Furthermore, look how many of the branches have a leaf on one side and a huge subtree on the other. Unless he expects the leaves are going to be chosen that much more than the big subtrees, he's nowhere close to getting as much information out of each question as he can.