How to run a simulation, and what we have learned building it.

Running your first simulation

From an empty workspace to a distribution you can act on, in five fields.

Building a population

Sources, sampling, and how to tell whether the group you built is the group you meant.

How a simulation actually runs

What happens between pressing run and getting a distribution back.

Confidence, and how it is measured

Every result carries a number saying how far to trust it. Here is where that number comes from.

Gen Alpha populations are live

Guardian-consented households with a child aged ten to fifteen, available on every plan including free.

Comparing two dates on one question

Run the same population and question against different dates, and read the difference directly.