Marc Andreessen

Co-Founder and General Partner, Andreessen Horowitz · 1 appearance on the record.

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investorfounderengineerauthorhost@pmarca ↗a16z.com ↗Wikipedia ↗

Marc Andreessen co-created the Mosaic web browser and co-founded Netscape before establishing the venture capital firm Andreessen Horowitz in 2009. He has written influential essays and backed major technology companies including Facebook, Coinbase, GitHub, and OpenAI.

29statements → 4claims → 1claims resolved → 3.83/5average certainty → 2.55/5average debate potential → ≈4.0/5argument clarity, estimated → 27said about them ↓

1 supported 0 partly supported 0 contradicted 3 not checkable as stated how the 4 claims stand · each chip opens the sources

1 prediction · 3 assertions · 7 opinions · 16 insights · 2 disclosures · every statement was checked. The prediction and assertions are the 4 claims: statements the public record can support or contradict. 1 is resolved, and 3 name no date, number or outcome precise enough to check. Everything else (opinions, insights, what ifs, disclosures) can never be settled by the record, so it carries no assessment.

The record, in short

What the tape says about how Marc argues and how the claims held up. Everything they said, and everything said about them, is in the tabs below.

Their most notable supported claim

Assertion Supported

Andreessen notes that Apple continues to exercise significant gatekeeper control

“Apple, you know, opening up the iPhone and the App Store was a big step forward, but of course, even Apple continues to exercise a fair amount of control. I mean, they're far more open than Verizon was in those days, you know, but even still, like, you know, A…”

Marc Andreessen Jan 25, 2022 ▶ 15:56 #129 Marc Andreessen: Interview with an Icon

How they sound: not measured why? →

We measure speaking style by listening to the audio itself, and a fair number needs at least 2,000 words from one person on tape we have measured. There is too little of Marc Andreessen on measured tape to publish a rate. This says nothing about how they speak.

What they said29 What others said27 Episodes1

Everything Marc Andreessen said on the Knowledge Project that made the record, most notable first. Filter by type, assessment or year in the ledger →

Assertion Not checkable as stated

Andreessen: All Top VCs Missed Most Generational Deals

“What each of the top venture capital capitalists of all time has in common is they all, each of them missed almost all of the great deals of their generation.”

Marc Andreessen Jan 25, 2022 ▶ 50:31 #129 Marc Andreessen: Interview with an Icon

Insight

Andreessen: Serial founders need strong-willed boards to prevent complacency

“Even entrepreneurs starting company number four or five, six, You know, this is why they should have, like, a board of directors, and they should have people on their board who are actually, like, very smart and strong-willed who will argue with them, right, a…”

Marc Andreessen Jan 25, 2022 ▶ 1:14:35 #129 Marc Andreessen: Interview with an Icon

Opinion

Andreessen: 'The Ancient City' is the best book on civilization and cults

“It's the best book I've ever found on sort of the creation of civilization, the sort of prehistory of civilization. And then it's the best book I've ever read on like basically The role of the cult, right? So like why cults exist what they are and what it feel…”

Marc Andreessen Jan 25, 2022 ▶ 1:17:43 #129 Marc Andreessen: Interview with an Icon

Disclosure

Andreessen states he will never run for political office under any circumstances

“Never, never under any circumstances.”

Marc Andreessen Jan 25, 2022 ▶ 1:08:20 #129 Marc Andreessen: Interview with an Icon

Insight

Andreessen: Simulating Other Thinkers' Mental Models Prevents Cognitive Narrowing

“By default, your kind of framework on that will get probably narrower over time, because you'll get kind of more locked in, more set in your ways And you'll get more resistant to new ideas. And so, like, one of the ways to offset that is to, like, quite litera…”

Marc Andreessen Jan 25, 2022 ▶ 1:09:52 #129 Marc Andreessen: Interview with an Icon

The other half of the tape: Marc Andreessen's own voice is left out of every number here. Other people bring the name up 25 times in 6 episodes on the Knowledge Project. 2 statements on the record name them. every mention, with the transcript →

Who brings them up most Shane Parrish 10 Mike Maples Jr. 5 Michael Ovitz 4 Elad Gil 2 Chris Dixon 2 Codie Sanchez 1 Balaji Srinivasan 1

Statements about Marc Andreessen, by other people (2)

Opinion

Ovitz: Michael Crichton was the smartest person I knew until Marc Andreessen

“Well, he was the smartest person I knew until I met Marc Andreessen, and then I had the greatest lunch of my life where I put them in a room with me, and I put one on each end of the table and me in the middle, and I felt like I was at Wimbledon or the U.S. Op…”

Michael Ovitz Feb 3, 2026 ▶ 49:32 Michael Ovitz: The Psychology of Power

Insight

Gil: Multi-decade relevance requires polymathic breadth, non-monetary drive, and early success

“The commonality that stands out to me across all those people is they tend to be pretty polymathic, so they have a wide range of interests. They tend to be driven by a mix of stuff, not just money. So of course money is important and all the rest, but I think …”

Elad Gil May 13, 2025 ▶ 1:09:33 Elad Gil: How to Spot a Billion-Dollar Startup Before the Rest of the World