You can play with Guesstimate, a spreadsheet-like tool handling uncertainty. Here's an example of estimating the duration of a task (shopping): https://www.get

You can play with Guesstimate, a spreadsheet-like tool handling uncertainty. Here's an example of estimating the duration of a task (shopping): https://www.getguesstimate.com/models/19512 https://www.getguesstimate.com/models/19512