From assumption to evidence.
Write down the winning idea after every turn. Use AssumptionsGPT to surface the assumptions behind your ideas, design experiments to test them and build a roadmap of what to test first.
Business model context
This information is added to the GPT prompts automatically, so the assumptions fit your business model.
Winning ideas
Enter the winning idea after every turn. Add as many turns as you play.
Assumptions
What has to be true for your ideas to work? Paste the assumptions from AssumptionsGPT here.
GPTs developed byDavid J. BlandAuthor of the book Testing Business Ideas
Paste the assumptions AssumptionsGPT
Keep the numbering (1.1, 1.2, 2.1 ...), so every assumption stays linked to its idea.
Experiments
How will you find out if an assumption holds? Paste the experiments from ExperimentsGPT here. They appear as cards in your validation roadmap.
GPTs developed byDavid J. BlandAuthor of the book Testing Business Ideas
Paste the experiments ExperimentsGPT
Keep the numbering. Every experiment becomes a card in step 4.
Validation roadmap
Click an experiment to add it to your roadmap. Then drag (or use the arrows) to prioritise, and label each experiment with its impact and current evidence.
Rule of thumb: test assumptions with high impact and weak evidence first. If an assumption breaks your business model when it turns out to be wrong, and you have little proof that it is right, it belongs at the top.
Your experiments 0
Loaded from step 3. Click a card to add it to (or remove it from) the roadmap.
Prioritised roadmap 0
1 = test first. Drag items or use the arrows to change the order.
Ready to shift from assumption to evidence?
Download a PDF report with your ideas, assumptions, experiments and prioritised validation roadmap. Share it with your team or trainer.