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Hi Steve,

I like your simple model, but it misses one of the key learnings I've made from doing these sorts of things: Show the assumptions and the results on a single page!


Hi Mike,

Your post is great. Thanks for sharing.

You're right, if you can put assumptions on same page as results, everything is in front of customer, and it's a tighter feedback loop. With large pro formas it's more difficult to put a lot of assumptions one page, that's why Guy Kawasaki's blog talks about a control panel tab.

Your post also reminds me of the concepts in the book Serious Play. And with a usability calculator, it's like you're modeling with the customer so you can create a model for the customer.


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