The Design Diagram An Idea by Charles Eames & Ray Eames www.eamesoffice.com This Eames drawing, often referred to as the Design Diagram, was created for a 1969 exhibition at the Louvre entitled, What is Design? Charles and Ray mailed it to the exhibition curator to augment their answers to a series of questions she had posed. The Design Squiggle designprocessconstraints
What's wrong with the rational model We Don’t Really Know the Goal When We Start We Usually Don’t Know the Decision Tree – We Discover It as We Go The Nodes Are Really Not Design Decisions, but Tentative Complete Designs The Goodness Function Cannot be Evaluated Incrementally The Desiderata and Their Weightings Keep Changing The Constraints Keep Changing Frederick P. Brooks, Jr., What's Wrong With This Model? Changing constraintsDeciding what to designThe situation talks back