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http://en.wikipedia.org/wiki/Top-down_and_bottom-up_design http://en.wikipedia.org/wiki/Top-down_and_bottom-up_design

• Groxx 16y ago
  >Bottom-up approaches seek to have smaller (usually molecular) components built up into more complex assemblies, while top-down approaches seek to create nanoscale devices by using larger, externally-controlled ones to direct their assembly. Absolutely perfect, thanks :) I never knew there were precise uses of these terms, they've always seemed overly-general to me.