Spreadsheet errors have resulted in huge financial losses.
Abraham & Erwig (2007)
Most executives do not really check or verify the accuracy or validity of [their] spreadsheets...
Teo & Tan (1999)
Untested spreadsheets are riddled with errors.
Miller (2005)
Spreadsheets are notoriously error-prone.
Cunha, et al (2011)
Spreadsheet shortcomings can significantly hamper an organization's business operation.
Reschenhofer & Matthes (2015)
Spreadsheets are dangerous to their authors and others.
Durusau & Hunting (2015)
A significant proportion of spreadsheets have severe quality problems.
Ayalew (2007)
...few incidents of spreadsheet errors are made public and these are usually not revealed by choice.
Kruck & Sheetz (2001)
It is irrational to expect large error-free spreadsheets.
Panko (2013)
Spreadsheet development must embrace extensive testing in order to be taken seriously as a profession.
Bock (2016)
1% of all formulas in operational spreadsheets are in error.
Powell, Baker, & Lawson (2009)
Spreadsheets are more fault-prone than other software.
Kulesz & Ostberg (2013)
Spreadsheets are easy to use and very hard to check.
Chen & Chan (2000)
People tend to believe their spreadsheets are more accurate than they really are.
Caulkins, Morrison, & Weidemann (2006)
Overconfidence is one of the most substantial causes of spreadsheet errors.
Sakal, et al (2015)
Every study, without exception, has found error rates much higher than organizations would wish to tolerate.
Panko (1999)
Spreadsheet errors... a great, often unrecognised, risk to corporate decision making & financial integrity.
Chadwick (2002)
Errors in spreadsheets... result in incorrect decisions being made and significant losses incurred.
Beaman, et al (2005)
Every study that has looked for errors has found them... in considerable abundance.
Panko & Halverson (1996)
The results given by spreadsheets are often just wrong.
Sajaniemi (1998)
The issue is not whether there is an error but how many errors there are and how serious they are.
Panko (2007)
Never assume a spreadsheet is right, even your own.
Raffensperger (2001)
It is now widely accepted that errors in spreadsheets are both common and potentially dangerous.
Nixon & O'Hara (2010)
Research on spreadsheet errors is substantial, compelling, and unanimous.
Panko (2015)
Despite being staggeringly error prone, spreadsheets are a highly flexible programming environment.
Abreu, et al (2015)
Spreadsheet errors are pervasive, stubborn, ubiquitous and complex.
Irons (2003)
Spreadsheets have a notoriously high number of faults.
Rust, et al (2006)
Spreadsheets contain errors at an alarmingly high rate.
Abraham, et al (2005)
Even obvious, elementary errors in very simple, clearly documented spreadsheets are... difficult to find.
Galletta, et al (1993)
Despite overwhelming and unanimous evidence... companies have continued to ignore spreadsheet error risks.
Panko (2014)
Spreadsheets... pose a greater threat to your business than almost anything you can imagine.
Howard (2005)
The untested spreadsheet is as dangerous and untrustworthy as an untested program.
Price (2006)
Spreadsheets are extraordinarily and unacceptably prone to error.
Dunn (2010)
A lot of decisions are being made on the basis of some bad numbers.
Ross (1996)
Spreadsheets are often hard, if not impossible, to understand.
Mireault & Gresham (2015)
94% of the 88 spreadsheets audited in 7 studies have contained errors.
Panko (2008)
Errors in spreadsheets are as ubiquitous as spreadsheets themselves.
Colbenz (2005)
The software that end users are creating... is riddled with errors.
Burnett & Myers (2014)
Spreadsheets are alarmingly error-prone to write.
Paine (2001)
Spreadsheets are the most popular live programming environments, but they are also notoriously fault-prone.
Hermans & van der Storm (2015)
Programmers exhibit unwarranted confidence in the correctness of their spreadsheets.
Krishna, et al (2001)
60% of large companies feel 'Spreadsheet Hell' describes their reliance on spreadsheets.
Murphy (2007)
Most large spreadsheets have dozens or even hundreds of errors.
Panko & Ordway (2005)
Developing an error-free spreadsheet has been a problem since the beginning of end-user computing.
Mireault (2015)
Spreadsheets can be viewed as a highly flexible programming environment for end users.
Abreu, et al (2015)
Studies have shown that there is a high incidence of errors in spreadsheets.
Csernoch & Biro (2013)
Spreadsheet errors are still the rule rather than the exception.
Nixon & O'Hara (2010)
The quality and reliability of spreadsheets is known to be poor.
Bishop & McDaid (2007)
Your spreadsheets may be disasters in the making.
Caulkins, Morrison, & Weidemann (2006)
Spreadsheets are commonly used and commonly flawed.
Caulkins, Morrison, & Weidemann (2008)

Links about spreadsheets

Further information about spreadsheet best practice, errors, and testing:

  • Raymond Panko's spreadsheet research. Professor Panko is a leading researcher in the field of spreadsheet errors. His website is a repository for research on spreadsheet development, testing, use, and technology.
  • European Spreadsheet Risks Interest Group (EuSpRIG). An independent, authoritative and comprehensive source of information on the current state of the art in spreadsheet risk management.
  • Delft Spreadsheet Lab. Works on spreadsheet quality, design patterns, testing and refactoring. Part of the Software Engineering Research Group of the Delft University of Technology.
  • SpreadSheets as a Programming Paradigm (SSaaPP). Studies the foundations of spreadsheets from a software engineering perspective to improve the quality of spreadsheets.
  • Spreadsheet Engineering Research Project. Research project on spreadsheet development; procedures for implementing, modifying, sharing, and archiving spreadsheets; and organizational policies relating to standards, training and quality control.
  • End users shaping effective software (EUSES). Consortium of researchers seeking to develop and investigate end-user software engineering technologies to bring the benefits of rigorous software engineering methodologies to end users.

If you know of any other relevant links, then please contact us.

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