Fast prototyping feedback loops are the whole game in product
The new unlock in modern product development is how fast you can get feedback from the things you're producing. As much as you'd want to write a however-many-page PRD and slowly build it and get it out there over weeks or months, if you can build a prototype in under 10 minutes that looks real, allows people to feel it, and get real reactions — that's the game. Speed of the feedback loop is everything.
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