If my meaning was that it was intended to be a trick question, then this is true. Reflecting back, I think I made the testing allusion because I was thinking at the time that how this particular question clearly reflected the concept of breadth first vs depth first and was indeed, NOT tricky. My comment history would probably reflect that I tend to think the questions are tricky at times. In this case, however; I am applauding the author on writing one that gave more clarity to a lesser known concept.