Henry Lieberman

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.

"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.

Only a quarter of survey participants were satisfied with their spreadsheet testing. Their techniques are largely manual and lack formalism.

Creating a slow spreadsheet is easy. Creating an efficient spreadsheet requires more thought and application of specific techniques.

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

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

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