How do we really know that no two snowflakes are ever alike?
In: Planetary Science
It’s a statistical saying.
It depends how close “identical” means (does every atom need to be in the exact position?), but it’s almost certain that 2 snowflakes that have ever fallen would be indistinguishable to s regular person because of the birthday paradox: https://en.m.wikipedia.org/wiki/Birthday_problem
Also identical fingerprints are possible (identical in the sense that the number of features looked at to determine a match is finite, and is statistically possible to find 2 matching people).
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