I have a question about two things that seem to be repeated here rather frequently but don't make sense to my mind; I'd appreciate it if someone could explain.

The first is that hollow ground razors can flex on your skin while shaving. Most of my razors are hollow ground and seem very sturdy. Also, if the only pressure we're applying is sufficient to shave off the cream, how could that possibly be sufficient pressure to flex a blade? It would have to be as thin as aluminum foil. Even a DE blade, as thin as they are, shouldn't flex under such light pressure.

My second point is somewhat related. I've seen people say that wedges and hollows sometimes need a different angle to shave properly. Since only the very edge of the razor touches the face, how can the grind have any impact on the shaving angle needed? If the bevel is set and the razor honed properly, the angle for shaving should be the same regardless of grind, which seems to have more to do with honing rather than shaving.

What am I not understanding?