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

Spreadsheet bibliography

Title Governance and structured spreadsheets: Your spreadsheets don't need to be black boxes
Authors Paul Mireault & Lindsey Gresham
Year 2015
Type Proceedings
Publication International Conference on Accounting and Finance
Series May
Abstract

The verification of spreadsheets continues to be tedious and challenging within corporate governance processes. This is primarily due to the fact that spreadsheets are often hard, if not impossible, to understand.

We present a development methodology that produces spreadsheets which are easier to understand and also highly maintainable, regardless of who designed and implemented the model. By following the methodology, the developer also produces the model's documentation, which can be handed off to another developer and can be used in an audit.

Full version Available
Sample
Formula diagram
Formula diagram
The Formula Diagram is a graphical representation of the model. Its purpose is to provide a global view of the model: we quickly see the relationships between the variables.
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