“Rosie the Robot is not doing our housework, and that is in part because the kind of physical reasoning a household robot would need to do can’t be done purely by running simulations.”
Our reading, the sentence that was checked:
General-purpose household robots like Rosie the Robot are not doing our housework, and this is in part because the physical reasoning such a robot would need cannot be done purely by running simulations.
Assessment: Unresolved Evidence as of
Where and when Gary Marcus wrote it
Marcus on AI, AI still lacks “common” sense, 70 years later, paragraph 15.
- Said
- Source observed
- live page, full text, public
- Evidence as of
- the cutoff for this assessment
- Assessment recorded
- assessment marcus-ai-still-lacks-common-sense-70-years-ffeaae-a1
We recorded 15 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 2025-01-05. This page does not claim the wording was captured then.
What the claim commits to
- Kind
- Causal claim
- 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
- in part (qualifier, stated by the speaker)
- purely by running simulations (qualifier, stated by the speaker)
- general-purpose household robots like Rosie the Robot (scope, stated by the speaker)
From the speaker
- Rosie the Robot is not doing our housework
- in part because
- physical reasoning a household robot would need
- can’t be done purely by running simulations
Our interpretation
- Rosie means a general-purpose robot reliably performing varied household chores autonomously. Specialized appliances do not settle this claim.
- Purely running simulations means using physical simulation as the complete reasoning method. Training a policy partly on simulated data is a different proposition.
- The claim requires a causal connection between simulation's reasoning limitations and the absence of reliable general-purpose household robots.
- For the ongoing state, use the latest completed research-reporting year before publication, through the post date: January 2024 to January 5, 2025.
Counts as supported if: Evidence establishes a material limitation of simulation-only physical reasoning and connects that limitation to the lack of reliable general-purpose household robots.
Counts as contradicted if: A general-purpose household robot reliably supplies the required physical reasoning through simulation alone, or persuasive causal evidence rules out the asserted limitation as a contributing obstacle.
Retrospective: these criteria were written after the outcome was public.
Current assessment
Does the evidence support the cause?
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 evidence documents relevant simulation limitations and useful results from simulation-assisted training. It does not establish the stronger causal claim. A difficulty transferring a trained policy to a real kitchen is not itself proof that simulation cannot supply the necessary physical reasoning. Nor do these studies isolate that limitation as a reason general-purpose household robots were unavailable.
Limitations
- The available experiments cover selected manipulation tasks.
- The institutional report is primary institutional reporting, not a controlled causal study.
- The practical and fundamental readings of cannot require different evidence.
Evidence (2 items)
Context only: MIT News / MIT CSAIL,
sim-to-real transfer
Why it matters here: This institutional report documents concrete limitations relevant to household manipulation. It concerns simulation-assisted training and does not establish that simulation-only reasoning is impossible or caused the absence of general-purpose robots.
- Publisher
- MIT News / MIT CSAIL
- Kind of source
- News report
- Describes events of
- Public from
Context only: arXiv / Nasiriany and colleagues,
a significant improvement
Why it matters here: RoboCasa found benefits from combining simulated and real demonstrations on limited kitchen tasks. This qualifies a broad dismissal of simulation, but does not test simulation as a complete physical-reasoning method.
- Publisher
- arXiv / Nasiriany and colleagues
- Kind of source
- Preprint, not peer reviewed
- Describes events of
- Public from
What would settle it
A study that isolates simulation-only reasoning on representative household tasks and connects its failures to deployment limitations, or a documented general-purpose household robot whose required reasoning is supplied by simulation alone.
Where it was said (1)
Said once in the sources this register covers.
: Marcus on AI, AI still lacks “common” sense, 70 years later
Rosie the Robot is not doing our housework, and that is in part because the kind of physical reasoning a household robot would need to do can’t be done purely by running simulations.
- Where
- paragraph 15
- Published
- 2025-01-05
- Source observed
- , live page
- Access
- full text, public
History
Assessment versions
- Assessment marcus-ai-still-lacks-common-sense-70-years-ffeaae-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-ai-still-lacks-common-sense-70-years-ffeaae-a1.