Two snowflakes land side by side on the ledge of a Manhattan skyscraper. In the streets far below the pavements are crowded with people, tiny black shapes moving about like ants.
“Incredible isn't it,” said one snowflake to the other, “from up here they all look the same, but did you know that each one is unique?”
The snow continued to fall, becoming heavier all the time, swirling past the ledge into the void below. For a moment it seemed that the white flakes falling through space, and the black dots on the pavements, were part of the same strange design.
“Yes, I know,” said the second snowflake, “and they are just as fragile as we are.”
