Basically, at any sharpness the edge isn’t perfectly exactly separating particles. It’s spreading out what is there (cutting it/making the parts further apart). But even a razor edge is still just hitting a super small part of what it’s cutting.
Put an apple on a cutting board and cut it with a not-so-sharp knife. There will be a little bit of skin and fruit on the board and/or edge if the knife. You’re poking it really hard in a super small space. It’ll squish or move whatever it can’t cut, depending on how hard you push.
Really, you have it figured out, I think. It’s just odd to think of cutting things this way so it seems confusing. Lol
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