Richard Paige

Errors in the data, formulas, or manipulation of spreadsheets could be costly, even devastating.

The cascading structure of typical spreadsheet formulae means that just about every spreadsheet is almost certainly wrong.

"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.

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.

Once information is loaded into a spreadsheet, it acquires properties that it may not deserve – a process called reification.

We are conscious of very few of our errors. When people are confronted with their actual error rates, they are typically shocked.

Solver Max provides a collection of optimization model examples in Excel (using the Solver and OpenSolver add-ins) and Python.