Thanks Lenny! I found the Sean Ellis / Rahul Vohra framework of measuring and growing PMF very actionable. Did some more research and wrote about it here: https://productlessons.substack.com/p/growing-your-product-market-fit

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Hi Lenny,

In your "Guides for finding product/market fit," I actually wrote the article you list as item #1, not Eric Ries (I see that the byline isn't clear and just says "Lean Startup Co. Education Program"). I wrote the article in conjunction with a talk I gave at the 2015 Lean Startup Conference where I shared advice from my book The Lean Product Playbook: https://amzn.to/2WUMFLr.

If you could please update the author and title, I'd appreciate it.

Thanks. And I'd be happy to chat with you about product-market fit anytime.

Dan Olsen


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Hi Lenny, in your point 1. you say "The ability to acquire users at less than the amount of money you make from that curve represents your true product/market fit." - may I ask - along the entire curve or only until it flattens out? thank you

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Hi Lenny. I was trying with your AI Bot. One of the question couldn't anser the bot. Maybe you can help me with your experience. The question was: "I have a new product that it is going to launch soon. In this case, how can I evaluate if my new product market fit?".

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