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