🧮 PremiseBench

A model is an argument. Open it, change one premise, and say what follows.

Getting ready…

A real case · you decide

Ngozi’s five minutes

Ngozi — a public-health student with five minutes at a school board meeting

The idea in play: presenting a model as an argument: its premises, what it leaves out, and how sure anyone is.

The board is deciding whether to close the school for a week during a flu outbreak. Ngozi has run a simple outbreak model and has five minutes to speak.

Her model has four premises: contacts per day, the chance a contact passes it on, days a person is infectious, and how many are sick on day one.

She is fairly sure about the infectious days. The chance of passing it on is a rough estimate from last winter. Nobody knows how many students are sick right now.

What does Ngozi show the board first?

A board member says, “Models are always wrong. Why should we trust yours?”

Open a model on the bench →

What next? Pick a door

Chosen from what this app is about. What you open is remembered on this device only.