Imperfect Data

In the early days of executive information systems we first dealt with the questions of whose data was right?  All data is imperfect, but what are the consequences of that imperfection when fed to an analytic model?  The issues are discussed.   " ...an executive from a large analytical software company said something interesting that stuck with me. I am paraphrasing from memory, but it was very much to the effect of, “Sometimes it’s better to have everyone agreeing on numbers that aren’t entirely accurate than having everyone off doing their own numbers.” ... "