Simon Murphy

Essential reading

We are conscious of very few of our errors. When people are confronted with their actual error rates, they are typically shocked.
Spreadsheets have errors like dogs have fleas. Nine out of every ten spreadsheets suffer some error, and consequences can be severe.
60% of large companies feel 'Spreadsheet Hell' describes their reliance on spreadsheets either completely or fairly well.
"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.
Incorrect use of Excel's NPV function is a common source of spreadsheet errors. We show several pitfalls and ways to avoid them.
Connexion is a collection of the most useful and interesting spreadsheet-related articles from the web.
The cascading structure of typical spreadsheet formulae means that just about every spreadsheet is almost certainly wrong.
See our bibliography of spreadsheet best practice, risk management, errors and testing, and methods for improving spreadsheets.