Haha, The PM's at my office actually would pull a reverse on that technique. Noting a flaw they would just say something like: "Oh no problem, the engineers at

Haha, The PM's at my office actually would pull a reverse on that technique. Noting a flaw they would just say something like: "Oh no problem, the engineers at competitor X probably just got lucky when they did it..." the guy in question was very smooth so it was a challenge to your pride without seeming overly jerky.