People, in this case women, like to hide how much they weigh. An inch reading like what you find on pants measurements would expose how large a woman is through numerical value and makes it harder to lie to yourself about how heavy you are.
Dress sizes are somewhat innocuous on purpose, sometimes you’ll fit into a four, sometimes a 6, so that your brain can hide from your eyes. It’s ultimately baby stuff that allow people to live in a fantasy world.
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