Peter Grant

Connexion is a collection of the most useful and interesting spreadsheet-related articles from the web.

Do you document your spreadsheets? We use the FizzBuzz word game to illustrate the importance of documenting your spreadsheets.

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

"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.

Our spreadsheet methodology has criteria for designing, building, and validating spreadsheets to ensure that they work correctly.

Your spreadsheets may be disasters in the making. Strive for spreadsheets that are validated, reliable, and auditable.

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

Every study that has looked for errors has found them in considerable numbers. Spreadsheeting's childhood is over.