“Turns out it wasn’t, as Shira Ovide just reported:”
Our reading, the sentence that was checked:
Generative AI was not in fact contributing half of US GDP growth, contrary to the White House AI advisor's claim.
Assessment: Unresolved Evidence as of
Where and when Gary Marcus wrote it
Marcus on AI, Turns out Generative AI was a scam, paragraph 5.
- Said
- Source observed
- live page, full text, public
- Evidence as of
- the cutoff for this assessment
- Assessment recorded
- assessment marcus-turns-out-generative-ai-was-a-scam-3f62cd-a1
We recorded 8 claims from this post. See every claim from this post.
The wording above is the version this site observed on 2026-10-28. The source may have been edited after 2026-02-23. This page does not claim the wording was captured then.
What the claim commits to
- Kind
- Observation
- Deadline, as the speaker wrote it
- None stated. This site does not add one.
- Deadline state when assessed
- No horizon
- Deadline state on 2026-10-29
- No horizon (the release’s reference date)
From the speaker
- in November
- Generative AI
- half of US GDP growth
- Turns out it wasn’t
Our interpretation
- Read the denial as saying the contribution was materially below approximately half, rather than merely different from exactly 50%.
- Provisionally identify the target as the first half of 2025, the period identified in indexed coverage of the November statement. The underlying statement and article could not be verified through read_page.
- GDP contribution means domestic output growth after accounting for imported inputs. Broad technology investment is a proxy, not a direct measurement of generative AI.
- Do not substitute full-year or first-nine-month estimates for the first-half comparison.
Counts as supported if: A credible decomposition for the referenced period isolates generative AI, or establishes a defensible upper bound, and places its contribution materially below half of US real GDP growth.
Counts as contradicted if: A credible decomposition for the same period and scope attributes approximately half or more of US real GDP growth to generative AI.
Retrospective: these criteria were written after the outcome was public.
Current assessment
Was it true for the period described?
Outcome: Unresolved
The record was checked, and the evidence available by the cutoff does not settle it.
Scored on a plain reading. The speaker named no measure for this claim, so it was judged on the reading an informed reader would take, stated below under our interpretation. Both reviews had to find that reading fair.
- Evidence as of
- Deadline state when assessed
- No horizon
- Assessment recorded
- Policy version
- 2026-10-28.7
Rationale
The readable research gives a sound reason to question headline AI growth shares: imported equipment must be accounted for, and technology investment is broader than generative AI. But it does not establish the exact generative-AI share for the comparison Marcus denied. The original November period also remains provisionally identified. A nine-month or full-year estimate cannot settle a first-half claim.
Limitations
- This does not validate the advisor's half-of-growth assertion.
- Several potentially decisive sources could not be read.
- Available estimates differ in period, coverage and accounting method.
Evidence (3 items)
Context only: arXiv; Luisa Carpinelli, Filippo Natoli and Marco Taboga,
Calculations conducted by Evercore ISI for the first half of 2025 produce similar results.
Why it matters here: The surrounding analysis reduces technology investment's growth contributions after subtracting imports and reports a similar first-half finding from Evercore. It measures broader technology activity, so it cannot directly settle the generative-AI share.
- Publisher
- arXiv; Luisa Carpinelli, Filippo Natoli and Marco Taboga
- Kind of source
- Preprint, not peer reviewed
- Describes events of
- Public from
Context only: Federal Reserve Bank of St. Louis,
Through the third quarter of 2025, these categories made up 39% (36% excluding data centers) of total GDP growth versus 28% in 2000.
Why it matters here: This is material evidence that related investment contributed substantially to measured growth. Its categories include non-AI activity, and its nine-month period cannot settle the first-half claim.
- Publisher
- Federal Reserve Bank of St. Louis
- Kind of source
- Independent measurement
- Describes events of
- Public from
Context only: Board of Governors of the Federal Reserve System,
In the first place, there is no established consensus for how AI investment can be identified in aggregate statistics.
Why it matters here: This methodological assessment explains the attribution gap. It is not outcome evidence about first-half 2025 growth.
- Publisher
- Board of Governors of the Federal Reserve System
- Kind of source
- Independent measurement
- Describes events of
- Public from
What would settle it
A readable record of the November statement, followed by a transparent, period-matched estimate or upper bound for generative AI's domestic contribution to real GDP growth.
Where it was said (1)
Said once in the sources this register covers.
: Marcus on AI, Turns out Generative AI was a scam
Turns out it wasn’t, as Shira Ovide just reported:
- Where
- paragraph 5
- Published
- 2026-02-23
- Source observed
- , live page
- Access
- full text, public
History
Assessment versions
- Assessment marcus-turns-out-generative-ai-was-a-scam-3f62cd-a1: Current. Outcome: Unresolved. Evidence as of 2026-10-28. Public date not recorded.
Recorded events
Assessment publishedBy this site
First assessment published after both reviews and the final-text check passed.
About assessment marcus-turns-out-generative-ai-was-a-scam-3f62cd-a1.