&NA; The idea of nanometre‐scale machines that can assemble molecules has long been thought of as the stuff of science fiction. Such a machine has now been built — and… Click to show full abstract
&NA; The idea of nanometre‐scale machines that can assemble molecules has long been thought of as the stuff of science fiction. Such a machine has now been built — and might herald a new model for organic synthesis. See Letter p.374
               
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