Are you so sure that you wouldn't be harmed in an extraordinarily strong gravitational "field", with field lines parallel to your body? I imagine that the diff

Are you so sure that you wouldn't be harmed in an extraordinarily strong gravitational "field", with field lines parallel to your body? I imagine that the difference in force exerted on your feet vs. your head is significant, in raw Newton's rather than as a percentage. The r^2 is basically constant across the length of your body, compared to M, but it's not actually constant, and when M is so large, I imagine even small changes in r^2 lead to (relative to our scale) large changes in F. Is my intuition wrong?