Francois-Marie Blondel

From error detection to behaviour observation: First results from screen capture analysis

Essential reading

"Oh My God" my formulas are not working! This article covers most of the reasons for Excel formulas not working. And how to fix them.
Do you document your spreadsheets? We use the FizzBuzz word game to illustrate the importance of documenting your spreadsheets.
95% of all spreadsheets contain errors. So, it is almost certain that your spreadsheets are wrong.
Research concludes unanimously that spreadsheet errors are both common and non-trivial. We must seek ways to reduce spreadsheet errors.
Connexion is a collection of the most useful and interesting spreadsheet-related articles from the web.
Good spreadsheets are essential for informing decision making. But most spreadsheets are not good. We help you make better spreadsheets.
Incorrect use of Excel's NPV function is a common source of spreadsheet errors. We show several pitfalls and ways to avoid them.
Our spreadsheet methodology has criteria for designing, building, and validating spreadsheets to ensure that they work correctly.