design has no criteria

False! They shout. Design does not exist without a set of assumptions and desires. Its criteria is manufactured. It is fantasy and deception--in whole or part a futile attempt to predict and contain the future. And it succeeds, because design and evolution are similar in one crucial regard: Perfection is less important than function. A car works better than a horse 9 times out of 10. A house designed by an architect is only marginally better than one designed by an amateur.