Norm Thomas

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

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

"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.

Spreadsheets can be considered to be the world's most successful end-user programming language. Spreadsheet formulas are Turing complete.

Spreadsheet audit and review procedures are an essential part of almost all City of London financial transactions.

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

Research concludes unanimously that spreadsheet errors are both common and non-trivial. We must seek ways to reduce spreadsheet errors.

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