How Superhuman built an engine to find product/market fit. Ask your early users: “how would you feel if you could no longer use the product?” Focus on the “very disappointed” group. These are your biggest proponents, they will tell you why your product is important.

This reminds me of finding a beachhead from Crossing the Chasm.

I also really liked this piece of advice:

Our next step was somewhat counterintuitive: we decided to politely pass over the feedback from users who would not be disappointed if they could no longer use the product.

This batch of not disappointed users should not impact your product strategy in any way. They’ll request distracting features, present ill-fitting use cases and probably be very vocal, all before they churn out and leave you with a mangled, muddled roadmap. As surprising or painful as it may seem, don’t act on their feedback — it will lead you astray on your quest for product/market fit.