It's a cliche but I think sometimes you just have to fall flat on your face to learn something. At the time we did not have the experience to know Graham was right. We acted as if he was wrong and we know the rest of the story. The good news is that we learned from it and that we'll try to never do this mistake again. It's hard to keep the focus and to not change your mind because almost everyone are in agreement with sentences like : "Well... you have no choice to do consulting. you have to live!".