Cells are already microscopic. We had no inkling of their existence for most of human history. Ribosomes are orders of magnitude smaller still. You have 13 million of them in a single cell from your liver. But ribosomes are not only incomprehensibly small; on the scale of atoms, they are massive, sophisticated superstructures. They’re composed of scores of substantial subunits, moving machine parts that act with far more precision than an automated factory line.
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