...rapidly
make products whose size is measured in meters starting from building blocks
whose size is measured in nanometers.
It is based on the idea that smaller parts can be assembled into larger
parts, larger parts can be assembled into still larger parts, and so forth.
This process can be systematically repeated in a hierarchical fashion,
creating an architecture able to span the size range from the molecular to the macroscopic. [Ralph C. Merkle]
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