Calculating variances, indexes, and forecasts would seem to make the decisions easy, but we know that the numbers don't manage the project. We do. We accept that we have to make new projections based on how the project is performing and then decide what we will do to make it meet the requirements in the end. So how will you, as the project manager, use this information to ensure project success at completion? What might get in your way? Does it matter where you are in the project timeline?