Key Idea! A wise designer lets users do his work for him rather than attempt to
figure out what they want. After designing a complex of buildings, an architect
was supposed to design the walkways between the buildings. He did not
assume that he knew how users would really use the walkways between
buildings. So he didn’t design the walkways or build them at the same time as
the buildings. Rather, he had fields of grass planted between the buildings. It is
rumored that he even posted signs saying, “Please walk on the grass.” A few
months after the buildings were completed; he came back and saw where the
most worn paths were where people walked across the grass between
buildings. Then he knew where he should put the walkways.