Project Execution - Simulation

Great teams, be in it sports or in other venues (e.g. orchestras) experience much greater performance when they practice before the big event.  How is it that project teams would not benefit from the same kind of team practice?  At PPS, we believe in practice, and offer our clients the opportunity to simulate the project with the team at project inception.  Such a simulation functions similar to the team practices that we expect from great teams.