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Question:
Please the reason(s) why two snowflakes cannot be the same size or shape.



Replies:
There is no absolute reason, merely a statistical one - a snowflake contains thousands of billions of billions (10^21 or more) of water molecules, and although snowflakes do have pretty patterns, they are really pretty much random, and it is highly unlikely that two collections of around 10^21 particles would be exactly alike.

Arthur Smith



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