| How the customer explained it |
| How the Project Leader understood it |
| How the Analyst designed it |
| How the Programmer wrote it |
| How the Business Consultant described it |
| How the project was documented |
| What operations installed |
| How the customer was billed |
| How it was supported |
| What the customer really needed |
Copied from scott.yang.id.au/2003/08/software-development-life-cycle.html.