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“Reputational risks can honestly be more devastating than business risk. So it made me more intentional about what risks to take.”
— Millie Marconi

Millie Marconi is the founder and CEO of Yesterday, and the creator of Test Feed, a breakout AI tool that lets users preview how their content will land with a synthetic audience before posting it online. In this episode, Millie shares the story behind building Test Feed after a viral LinkedIn post backfired and sparked a personal reckoning around reputational risk. We explore how synthetic audiences are making elite-level brand testing accessible to everyday founders, why building in public is both terrifying and empowering, and what non-technical founders can bring to the AI table. Millie also opens up about her nomadic lifestyle, her favorite AI tools (Claude and Gemini, anyone?), and the unexpected upside of being “canceled.”

Chapters
Resources

🙋‍♀️ Follow Millie on LinkedIn - linkedin.com/in/millie-marconi

💼 Yesterday Testfeed - yesterday.work

🧵 Millie’s LinkedIn Post on “Masculine Energy” - linkedin.com

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