My favorite expression of why integrated project delivery works is this pair of graphs from Attorney Will Lichtig, which Will was kind enough to let me use in my book on zero net energy homes. As they show, in a conventional building development process, common understanding among all parties is achieved at the end, when construction is complete. By contrast, when an integrated process is used, common understanding is achieved very early in the design stage. A number of other benefits accrue from bringing together a project team at the beginning of design: by working together from an early stage, the team develops cohesiveness and commitment to the project’s goals. Team members invest themselves in the project’s success. The power of this transformation can’t be overstated.