Here is one that I see often.

A belief that if you build a great system, people will use it (because it is so great). There is a complete lack of how to incorporate this it into current processes.

>Hello, All.
>
>I am pretty sure that all of us have at least one failure in analyzing, developing, installing and being paid for an app.
>
>Please, can you be so gentle to enumerate your reasons?
>
>Mine, for example, are:
>
>1. Insufficient knowledge (mine or customer's) about the app's main goal, resulting a bad system analysis.
>2. Insufficient Visual FoxPro experience.
>3. Incooperant users.
>4. A supervisor willing to give the money for the app to a friend of his (yes, in my country it's possible! :)
>5. Incompetent users
>6. A domain in a continous transformations, making my life a living hell :)
>
>Can you complete the list?
>
>Thank you.