Michael R. Galbreth

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

Incorrect use of Excel's NPV function is a common source of spreadsheet errors. We show several pitfalls and ways to avoid them.

This article walks you through different methods and built-in tools that can be used to audit and debug Excel spreadsheets.

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.

A poorly documented spreadsheet erodes effective use. Our workshops help students develop good documentation habits and skills.

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

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