Never assume a spreadsheet is right, even your own.

Spreadsheet development must embrace extensive testing in order to be taken seriously as a profession.

Untested spreadsheets are riddled with errors.

Spreadsheets... pose a greater threat to your business than almost anything you can imagine.

The quality and reliability of spreadsheets is known to be poor.

Even obvious, elementary errors in very simple, clearly documented spreadsheets are... difficult to find.

Spreadsheets are alarmingly error-prone to write.

Spreadsheets are easy to use and very hard to check.

Errors in spreadsheets are as ubiquitous as spreadsheets themselves.

Overconfidence is one of the most substantial causes of spreadsheet errors.

Your spreadsheets may be disasters in the making.

People tend to believe their spreadsheets are more accurate than they really are.

Most executives do not really check or verify the accuracy or validity of [their] spreadsheets...

Spreadsheets are extraordinarily and unacceptably prone to error.

Despite overwhelming and unanimous evidence... companies have continued to ignore spreadsheet error risks.

...few incidents of spreadsheet errors are made public and these are usually not revealed by choice.

Spreadsheet errors are pervasive, stubborn, ubiquitous and complex.

Spreadsheets can be viewed as a highly flexible programming environment for end users.

It is now widely accepted that errors in spreadsheets are both common and potentially dangerous.

Research on spreadsheet errors is substantial, compelling, and unanimous.

A lot of decisions are being made on the basis of some bad numbers.

Spreadsheet errors have resulted in huge financial losses.

Spreadsheets are commonly used and commonly flawed.

Every study that has looked for errors has found them... in considerable abundance.

Spreadsheet errors... a great, often unrecognised, risk to corporate decision making & financial integrity.

Studies have shown that there is a high incidence of errors in spreadsheets.

Developing an error-free spreadsheet has been a problem since the beginning of end-user computing.

Most large spreadsheets have dozens or even hundreds of errors.

The issue is not whether there is an error but how many errors there are and how serious they are.

Spreadsheets are the most popular live programming environments, but they are also notoriously fault-prone.

60% of large companies feel 'Spreadsheet Hell' describes their reliance on spreadsheets.

Spreadsheets are more fault-prone than other software.

Spreadsheet shortcomings can significantly hamper an organization's business operation.

Spreadsheets contain errors at an alarmingly high rate.

Spreadsheets are often hard, if not impossible, to understand.

The untested spreadsheet is as dangerous and untrustworthy as an untested program.

Spreadsheet errors are still the rule rather than the exception.

Spreadsheets are dangerous to their authors and others.

Programmers exhibit unwarranted confidence in the correctness of their spreadsheets.

A significant proportion of spreadsheets have severe quality problems.

Spreadsheets are notoriously error-prone.

The software that end users are creating... is riddled with errors.

94% of the 88 spreadsheets audited in 7 studies have contained errors.

1% of all formulas in operational spreadsheets are in error.

Despite being staggeringly error prone, spreadsheets are a highly flexible programming environment.

It is irrational to expect large error-free spreadsheets.

Errors in spreadsheets... result in incorrect decisions being made and significant losses incurred.

Spreadsheets have a notoriously high number of faults.

The results given by spreadsheets are often just wrong.

Every study, without exception, has found error rates much higher than organizations would wish to tolerate.