What is the most efficient design?
what is the most efficient human design or what is the best human designed innovation?
On this scale, I would think that innovations like the bicycle, soap, nail clippers, and the internet would be high, but for different reasons. I would likewise be inclined to think of other human creations such as the Edsel, a Tomahawk missile, or the lava lamp on the other end of the spectrum.
Clearly, there can be disagreement on this issue and a case could be made for some of the innovations I have put at the low end of the spectrum, being put on higher footing.
As a final illustration of this thread, is the washing machine or the drier the more innovative product?