Yes, I suppose it could be taken that way. I wasn't intending to argue one way or the other, merely to point out that such an apparently simple condition ("if s

Yes, I suppose it could be taken that way. I wasn't intending to argue one way or the other, merely to point out that such an apparently simple condition ("if someone understands...") actually encompasses a huge amount of uncertainty, and so doesn't necessarily represent the "easy answer" that it might at first appear.