The reason design projects that neglect research fail isn’t because of a lack of knowledge. It’s because of a lack of shared knowledge. Creating something of any complexity generally requires several different people with different backgrounds and different priorities to collaborate on a goal. If you don’t go through an initial research process with your team, if you just get down to designing without examining your assumptions, you may think your individual views line up much more than they do. Poorly distributed knowledge is barely more useful than no knowledge at all.