The a16z Show Marc Andreessen on Evaluating Founders and AI's Consumer Surplus
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Mar 30, 2026 
Marc Andreessen, co-founder of Andreessen Horowitz, Netscape pioneer, and famed tech thinker, dives into how he judges founder greatness through IQ, courage, and drive. He talks about why investors should bet on people over plans, why AI is pulling talent back to Silicon Valley, where AI’s value really goes, and why second acts in business matter.
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Why Venture Mistakes of Omission Matter More
- Venture investors should fear missed winners more than failed bets, because passing on Google costs more than losing one startup check.
- Marc Andreessen calls past scars the scalded stove phenomenon and says failed sectors like AI later produced huge returns.
Back The Founder More Than The Plan
- Back exceptional founders over the business plan, especially when the person clearly breaks your usual rules.
- Marc Andreessen cites Arthur Rock saying he'd have shredded every pitch deck and spent 100% of his time on the resume.
The Three Traits Marc Sees In Great Founders
- Marc Andreessen evaluates founder greatness with three traits: high IQ, courage, and primal drive to build.
- He looks for people who taught themselves to create early, like building products at 14, 17, and 20.
