EO Things I Learned From 10 Years In Silicon Valley | Sisun Lee (1/2) | EO
Nov 10, 2025
Sisun Lee, a serial entrepreneur and former product manager at tech giants like Facebook, Uber, and Tesla, delves into his career journey. He shares valuable lessons from working in Silicon Valley and his venture into creating MoreLabs, a brand for productivity-enhancing beverages. Lee discusses his experiences in understanding user needs, scaling growth at Tesla, and the harsh realities during COVID that led to a significant revenue drop. He reflects on stepping down as CEO and the personal exploration that followed, reigniting his passion for future projects.
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PM Is About Impact, Not Title
- Product management means doing what is most important to make the product succeed, not following a fixed job description.
- Sisun Lee learned this at Facebook by being sent to remote markets to find the highest-impact work.
Learning By Going To The Market
- Sisun Lee flew to Kenya without an itinerary to understand slow internet and remote user needs firsthand.
- He returned with the conclusion that the team must radically rethink product assumptions for those markets.
Iterate A Lot To Find Big Wins
- Iteration volume matters: being wrong often is fine if you can iterate many times to find a big win.
- Sisun Lee emphasizes that one big right decision can outweigh many small mistakes.