ClaimsPeople

Marc Andreessen

Marc Andreessen co-created the Mosaic browser, cofounded Netscape, and is cofounder and general partner of the venture capital firm Andreessen Horowitz.

1,009 claims collected, 216 researched, 105 resolved. Report of 4 November 2026, method 0.1.0+c876030c.

Scores by kind of claim

Each kind of claim is scored on its own, out of 100: the share that held up, with the range it likely falls in. Fewer resolved claims give a wider range.

  • Factual claims

    Statements about the present or the past, checked against the record: did they hold up?

    67 61 73

    High confidence, 94 factual claims resolved. From 11 documents, 1995 to 2026; 19 documents sampled from 30 candidates found.

    Not scored: 44 unresolvable, 17 checkable only against their own records.

  • Predictions

    Statements about events outside the person's control, checked once they fell due: did they come true?

    60 44 76

    Low confidence, 11 predictions resolved. From 6 documents, 1995 to 2025; 19 documents sampled from 30 candidates found.

    Not scored: 41 unresolvable, 1 checkable only against their own records. 4 more fall due later.

    Does not yet allow for how likely each prediction was when made.

  • Promises

    Commitments to the person's or organisation's own future action, with something to deliver: was it delivered?

    Insufficient record: 0 promises resolved, 5 needed for a score.

    Not scored: 3 unresolvable.

All types combined: 66 (likely 61 to 72, high confidence), from 105 claims: 94 factual claims, 11 predictions. It mixes kinds of claim in different proportions for different people, so compare people kind by kind.

Marc Andreessen's claims

19 claims

19 claims, sorted by newest said. Choose a claim to read it in full.
VerdictKindSaidClaimTopic
Mixed Factual 31 Mar 2026 The recent corporate layoffs were not caused by AI. Factual · 31 Mar 2026 AI, the economy and work
Mixed Factual 7 Jan 2026 Within less than 12 months, four or five Chinese companies caught up to the frontier of the AI industry. Factual · 7 Jan 2026 AI capabilities
Mixed Factual 8 Oct 2025 A significant percentage of U.S. jobs are licensed, unionized or civil service in a way that means they cannot literally be replaced. Factual · 8 Oct 2025 AI, the economy and work
Mixed Factual 26 Jan 2025 Political donations in Silicon Valley go 90 to 99% to one party. Factual · 26 Jan 2025 AI policy and governance
Mixed Factual 26 Jan 2025 The Stanford Internet Observatory was basically funded by the federal government to be a third-party censorship operation. Factual · 26 Jan 2025 Philosophy, ethics and society
Mixed Factual 26 Jan 2025 The system that has been built for these people is paid for virtually 100% by taxpayer money. Factual · 26 Jan 2025 Economics and markets
Mixed Factual 16 Oct 2023 In a market system, society captures about 98% of the value of technological innovation, a 50:1 ratio to the innovating company's share. Factual · 16 Oct 2023 Economics and markets
Mixed Factual 2 Sep 2023 Richard Nixon created a project in 1972 called Project Independence, and proposed building 1,000 new US nuclear reactors. Factual · 2 Sep 2023 Economics and markets
Mixed Factual 2 Sep 2023 In the research literature, IQ is typically linked to outcomes with a correlation of about 0.4 to 0.5. Factual · 2 Sep 2023 Science and research methods
Mixed Factual 12 Jun 2023 AI development has a critical mass basically in two places in the world, the United States and China. Factual · 12 Jun 2023 AI compute, hardware and data
Mixed Prediction 12 Jun 2023 Andreessen said he was pretty confident that within roughly two years of June 2023, AI systems' limited persistent memory across sessions would be a solved problem. Prediction · 12 Jun 2023 AI timelines and forecasting
Mixed Factual 12 Jun 2023 Hundreds of studies' conclusions on the benefits of intelligence all correlate with fluid intelligence, the ability to rapidly assimilate knowledge and use it to solve problems. Factual · 12 Jun 2023 Philosophy, ethics and society
Mixed Factual 18 Apr 2020 American manufacturing output is higher than ever. Factual · 18 Apr 2020 Economics and markets
Mixed Factual 18 Apr 2020 As of April 2020 there were not enough ventilators, negative pressure rooms and ICU beds. Factual · 18 Apr 2020 Other global risks
Mixed Factual 1 Jan 2018 Andreessen Horowitz's portfolio companies are getting more assertive about entering markets that earlier founders may not have been willing to enter. Factual · 1 Jan 2018 Economics and markets
Mixed Factual 20 Aug 2011 As of 2011, Amazon was the world's largest bookseller. Factual · 20 Aug 2011 Economics and markets
Mixed Factual 20 Aug 2011 As of August 2011, major public technology companies had all-time low price/earnings ratios. Factual · 20 Aug 2011 Economics and markets
Mixed Factual 20 Aug 2011 As of 2011, Netflix was the largest video service by number of subscribers. Factual · 20 Aug 2011 Economics and markets
Mixed Factual Jun 1995 Early in his time at the University of Illinois, Andreessen started working in a research lab at the university's physics research facility. Factual · Jun 1995 Their own work or organisation
Back to the list

Factual Other global risks

“We don’t have enough ventilators, negative pressure rooms, and ICU beds.”

Marc Andreessen, a16z co-founder, essay author 18 April 2020 It's Time to Build (a16z)

As of April 2020 there were not enough ventilators, negative pressure rooms and ICU beds.

Mixed Partly true and partly false in roughly equal measure.

Said for an organisation they lead or work for; it counts on both records.

What would count as true or false

Judge as of 18 April 2020, for the United States (the context of the 'It's Time to Build' essay). True: contemporaneous evidence (government assessments, hospital association or academic capacity studies, credible news reports from March–April 2020) shows real or projected shortages of all three: ventilators, negative pressure/airborne-isolation rooms, and ICU beds. Mostly true: shortages are documented for two of the three plus widespread projected shortfalls for the third, or shortages were real in hotspots (e.g., New York) and widely projected nationally. Mixed: shortages documented for only one or two items, or capacity was shown to be broadly adequate nationally while shortfalls were local. Mostly false: evidence shows national capacity was largely sufficient in April 2020 and shortages were isolated, overstating a narrow situation. False: evidence shows no meaningful shortage of any of the three at the time.

Evidence

  1. Hospital Experiences Responding to the COVID-19 Pandemic: Results of a National Pulse Survey March 24-27, 2020 (OEI-06-20-00300; 04/20) U.S. Department of Health and Human Services, Office of Inspector General · April 2020
    “Many hospitals reported concerns that they would not have enough ventilators if faced with a surge of COVID-19 patients.”
  2. Hospital Experiences Responding to the COVID-19 Pandemic: Results of a National Pulse Survey March 24-27, 2020 (OEI-06-20-00300; 04/20) U.S. Department of Health and Human Services, Office of Inspector General · April 2020
    “When patient stays were extended while awaiting test results, this strained bed availability, personal protective equipment (PPE) supplies, and staffing.”
  3. Ventilator Ethics: National Supply Is Days Away From Peak Use Courthouse News Service · 8 April 2020
    “As for the strategic national stockpile, the Federal Emergency Management Agency shared documents with Congress last week indicating that just 9,500 ventilators were left. Those stocks are now totally depleted, the Health and Human Services Department confirmed Monday to the House Oversight Committee, as demand continues to rise.”
  4. Mass. Delegation Urges FEMA to Immediately Release Enough Ventilators from the Strategic National Stockpile to Massachusetts as Hospitals Prepare for Surge Office of Senator Elizabeth Warren (press release) · 6 April 2020
    “The Trump Administration currently has over 9,000 total ventilators available in the Strategic National Stockpile (SNS) – and over the past week has distributed these lifesaving machines to five other states.”

Reasoning

The HHS OIG national pulse survey from March 24–27, 2020 reports that many hospitals feared they would not have enough ventilators in a COVID-19 surge (E1). Contemporaneous reports say the Strategic National Stockpile had about 9,000–9,500 ventilators in early April and that HHS confirmed it was depleted (E3, E4). That documents a ventilator shortage. For beds, E2 says only that general bed availability was strained when stays were extended; it gives no ICU-specific figures, and no evidence addresses negative pressure or airborne-isolation rooms. Under the criteria, shortages are documented for only one or two of the three items, which fits 'mixed'.

Cite this claim

Marc Andreessen, “As of April 2020 there were not enough ventilators, negative pressure rooms and ICU beds.” (said 18 April 2020). Verdict: mixed. Reliability API, claim c_cc3cf2da7ea6, method 0.1.0+c876030c. https://epistacklabs.com/claims/c_cc3cf2da7ea6

Claims without a verdict

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