TRIM

This early spreadsheet, a Babylonian clay tablet c.1800 BC, contains several errors. How many errors do your spreadsheets have?

Creating a slow spreadsheet is easy. Creating an efficient spreadsheet requires more thought and application of specific techniques.

Incorrect use of Excel's NPV function is a common source of spreadsheet errors. We show several pitfalls and ways to avoid them.

Good spreadsheets are essential for informing decision making. But most spreadsheets are not good. We help you make better spreadsheets.

The cascading structure of typical spreadsheet formulae means that just about every spreadsheet is almost certainly wrong.

Once information is loaded into a spreadsheet, it acquires properties that it may not deserve – a process called reification.

Errors in the data, formulas, or manipulation of spreadsheets could be costly, even devastating.

Do you document your spreadsheets? We use the FizzBuzz word game to illustrate the importance of documenting your spreadsheets.