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This page turns a simple physical fact into a compact statement about limits, conditions, and the environments that allow grace.

Because the line is so plain, it opens outward. Skipping a stone depends on surface, angle, and restraint, so the page feels like an aphorism about what kinds of motion are only possible in the right medium.

'''Three-line aphorism: 'You can only skip a stone on a lake.' A minimalist physics claim -- skipping is lake-only, not sea, not river.'''