Conclusion

The PSP mantra is quite simple: follow a defined process, plan the work, gather data, and analyze the data to improve the process. However, this mantra, like most others, can sound tedious . It's easy to drift back to tried and proven bad habits if you don't apply backbone, conviction , and discipline to the effort.

Results from PSP suggest that individual engineers can, through practice, become better estimators, produce better code, and remain productive. At long last, the question "When are you going to be done?" may even elicit a reasoned response.