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

Spreadsheet bibliography

Title Copy-paste tracking: Fixing spreadsheets without breaking them
Authors Felienne Hermans & Tijs van der Storm
Year 2015
Type Proceedings
Publication International Conference on Live Coding
Series July
Abstract

Spreadsheets are the most popular live programming environments, but they are also notoriously fault-prone. One reason for this is that users actively rely on copy-paste to make up for the lack of abstraction mechanisms. Adding abstraction however, introduces indirection and thus cognitive distance.

In this paper we propose an alternative: copy-paste tracking. Tracking copies that spreadsheet users make, allows them to directly edit copy-pasted formulas, but instead of changing only a single instance, the changes will be propagated to all formulas copied from the same source.

As a result, spreadsheet users will enjoy the benefits of abstraction without its drawbacks.

Full version Available
Sample
Copy-paste tracking
Copy-paste tracking
We propose XanaSheet, a spreadsheet system that employs origin tracking techniques to maintain a live connection between source and destination of copy-paste actions. Whenever a copied formula is edited, the modifications are transformed and replayed on the original and all other copies.
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