flow · proposed

So you want to make a digital twin?

Five questions. Most people get off before the last one.

1. You have a place in mind

2. 1Not sure what to ask yet?

   Yes: Start with a story· Each story shows what a model of a place let someone see.

3. 2Has someone already modeled your place?

   Yes: Look at theirs· Helsinki publishes its city model and an energy atlas that anyone can open in a browser.

4. 3Would a map or a spreadsheet answer it?

   Yes: Do that instead· A model earns its keep when things interact and keep changing. A one-off question often needs less.

5. 4Is there a free tool for this kind of question?

   Yes: Use it today· En-ROADS runs in a browser: move the sliders for climate policies and see the modeled effect.

6. 5Have data, and someone who can code a little?

   Yes: Adapt an open model· InVEST is a suite of open models that can be set up for a new place.

7. Build one, or have it built follow the nine stages

   Nine guides, read in order.