# Guesstimate, a Spreadsheet for Things That Aren’t Certain

- [Introduction to a spreadsheet for when things aren’t certain](https://medium.com/guesstimate-blog/introducing-guesstimate-a-spreadsheet-for-things-that-aren-t-certain-2fa54aa9340#.wuhprnc2m)
- [Guesstimate Website](http://getguesstimate.com/)