Neil Cherry wrote:

Fast (amount of time to do), Good (quality, meets requirements), and Cheap (overall cost). Pick any 2

I've heard this all my life, but it not really true. To some degree it does say something about the finished product, but it doesn't extend to the process of creating that product. No amount of money will buy time. Throwing more people at a project won't make it happen any faster. The reality is that you can either say what or you can say when, but you can't say both. The greatest project failures I've seen all come down to someone who can't design their way out of a paper bag thinking they can manage their way around this fundamental law. If you like, think of it like the uncertainty principle for project management. The more you know about what is going to be delivered, the less you know about when it's going to be delivered, and vice versa. The effect that the amount of money has on that is lost in the noise. BLS