“Game play continued, and I was able to beat the “smartest AI on earth” in four moves.”
Our reading, the sentence that was checked:
Grok 3 lost to Marcus in four moves at a tic-tac-toe variant that used y's and z's.
Assessment: Unresolved Evidence as of
Where and when Gary Marcus wrote it
Marcus on AI, Generative AI’s crippling and widespread failure to induce robust models of the world, paragraph 70.
- Said
- Source observed
- live page, full text, public
- Evidence as of
- the cutoff for this assessment
- Assessment recorded
- assessment marcus-generative-ais-crippling-and-widespread-1ed5cf-a1
We recorded 18 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 2025-06-28. 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)
Conditions
- tic-tac-toe with y's and z's (qualifier, stated by the speaker)
From the speaker
- Grok 3
- y’s and z’s instead of X’s and O’s
- I started with a y in the center
- z in the top-left corner
- I was able to beat
- in four moves
Our interpretation
- This is a claim about one particular game, not Grok's general playing strength.
- Four moves means Marcus's fourth placement, following alternating legal turns with Marcus moving first.
- The game happened before publication, but recently supplies no exact lower date bound.
Counts as supported if: An authenticated complete record identifies Grok 3, establishes the y/z rules and opening, and shows Marcus completing a legal winning line on his fourth placement.
Counts as contradicted if: An authenticated record of that game shows a different model, an illegal or nonwinning position, or a win on a different personal turn.
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 claim is concrete and checkable, but the searches located Marcus's account and repetitions of it rather than an authenticated game record. Reports of other Grok game failures cannot establish this particular four-move victory. The missing record neither supports nor contradicts his account.
Limitations
- A public record may exist outside the indexed sources searched.
- Failure to locate corroboration is not evidence that the game did not happen.
Evidence (0 items)
No evidence item settled this claim by the cutoff.
What would settle it
A complete authenticated conversation showing Grok 3, the y/z rules, all preceding instructions and every move through the claimed fourth-placement victory.
Where it was said (1)
Said once in the sources this register covers.
: Marcus on AI, Generative AI’s crippling and widespread failure to induce robust models of the world
Game play continued, and I was able to beat the “smartest AI on earth” in four moves.
- Where
- paragraph 70
- Published
- 2025-06-28
- Source observed
- , live page
- Access
- full text, public
History
Assessment versions
- Assessment marcus-generative-ais-crippling-and-widespread-1ed5cf-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-generative-ais-crippling-and-widespread-1ed5cf-a1.