A phrase often uttered as rationale for considering that a CI‘s requirements are (obviously!) met by a prospective design.
This one really chaps my hide. Philosophically, it isn’t actually possible to prove the negative. Our job as Engineers is to show why it WILL work…not to challenge other people to show why it WON’T work. Getting people to understand this often requires some head-shaping. Inability to accommodate it has led me to seek the reassignment of more than one subordinate Engineer.