“Immediately after the February announcement of Sora, I noted Sora’s troubles with physics and predicted that they wouldn’t go away. They haven’t.”
Our reading, the sentence that was checked:
Sora's troubles with physics have not gone away since its February 2024 announcement.
Assessment: Supported Evidence as of
Where and when Gary Marcus wrote it
Marcus on AI, 25 AI Predictions for 2025, from Marcus on AI, paragraph 19.
- Said
- Source observed
- live page, full text, public
- Evidence as of
- the cutoff for this assessment
- Assessment recorded
- assessment marcus-25-ai-predictions-for-2025-from-marcus-249ada-a2
We recorded 37 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 2025-01-01. 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
- February announcement of Sora
- troubles with physics
- predicted that they wouldn’t go away
- They haven’t
Our interpretation
- The ordinary reading is that physically unrealistic behavior remained a limitation of Sora at the end of 2024.
- This retrospective does not assert that every output violates physics or that Sora made no improvements.
- The target runs from the February 2024 announcement through December 2024, as specified by the retrospective context.
- I assess the stated persistence of the limitation, rather than treating the recalled prediction as an unlimited forecast about all future Sora models.
Counts as supported if: Primary documentation or reproducible observations establish physics failures in the February model and show that the limitation remained in the late-2024 version.
Counts as contradicted if: Reliable evidence establishes that the relevant physics failures had been resolved in the version available by the end of 2024. Improved speed or selected successful videos alone would not suffice.
Retrospective: these criteria were written after the outcome was public.
Current assessment
Was it true for the period described?
Outcome: Supported
The dated evidence matches what the claim committed to, under the criteria frozen before grading.
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
On February 15, 2024, OpenAI documented failures to model basic physical interactions in Sora, including glass shattering [e1]. On December 9, 2024, OpenAI said the deployed Sora Turbo version often generated unrealistic physics [e2]. These disclosures support persistence of the limitation from the February preview to the December release [e1, e2].
Limitations
- The disclosures do not quantify failure rates or establish that physics performance had not improved [e1, e2].
- The evidence is company documentation, not independent testing [e1, e2].
- These items do not verify the date or wording of Marcus's original prediction [e1, e2].
Evidence (2 items)
Supports the claim: OpenAI,
like glass shattering.
Why it matters here: OpenAI explicitly documented physics failures in the February model, establishing the initial limitation.
- Where
- Discussion
- Publisher
- OpenAI
- Kind of source
- Company disclosure: the company describing itself, not an independent finding
- Describes events of
- Public from
Supports the claim: OpenAI,
It often generates unrealistic physics
Why it matters here: The launch notice attributes continuing unrealistic physics to the deployed December version. This directly establishes persistence beyond the February preview.
- Publisher
- OpenAI
- Kind of source
- Company disclosure: the company describing itself, not an independent finding
- Describes events of
- Public from
Where it was said (1)
Said once in the sources this register covers.
: Marcus on AI, 25 AI Predictions for 2025, from Marcus on AI
Immediately after the February announcement of Sora, I noted Sora’s troubles with physics and predicted that they wouldn’t go away. They haven’t.
- Where
- paragraph 19
- Published
- 2025-01-01
- Source observed
- , live page
- Access
- full text, public
History
Assessment versions
- Assessment marcus-25-ai-predictions-for-2025-from-marcus-249ada-a2: Current. Outcome: Supported. 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-25-ai-predictions-for-2025-from-marcus-249ada-a2.