REVIEW 1 major objections 2 cited by
Many-Shot CoT-ICL: Making In-Context Learning Truly Learn
T0 review · 1 major / 0 minor · reviewed 2026-06-30 · grok-4.3
Pith's one-line read Ordering demonstrations for smooth conceptual progression turns many-shot CoT-ICL into effective test-time learning on reasoning tasks.
desk verdict CDS gives a modest gain on one math task but the abstract leaves the ordering effect unisolated from demo selection. read the letter →
The pith
A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.
The reading
What carries the argument
Curvilinear Demonstration Selection (CDS), an ordering method that arranges demonstrations to support smooth conceptual progression from easier to more complex examples.
What would settle it
An experiment on the same math task with 64 demonstrations that uses random ordering or a non-curvilinear selection method and measures whether the 5.42-point gain disappears.
Extended reading notes
Core claim
Viewing many-shot CoT-ICL as in-context test-time learning rather than scaled pattern matching yields the principles that demonstrations should be easy to understand and ordered for smooth conceptual progression; Curvilinear Demonstration Selection based on these principles produces up to a 5.42 percentage-point gain on a math task with 64 demonstrations.
Load-bearing premise
The performance gains come from the proposed ordering principles rather than from other aspects of how the demonstrations were chosen or from task-specific factors.
Editorial extensions
If this is right
- Many-shot CoT-ICL on reasoning tasks benefits when the context window is treated as a learning curriculum.
- Performance on math reasoning improves when demonstrations follow a curvilinear ordering that matches the model's understanding.
- Long context windows can serve as structured test-time curricula beyond simple pattern retrieval.
- Distinctive scaling behaviors appear for both non-reasoning and reasoning-oriented models under many-shot CoT-ICL.
Reading between the lines
- The curvilinear ordering idea might extend to other reasoning domains if an automatic way to measure conceptual progression can be defined.
- Models that already receive curriculum-style training during pretraining could show larger or smaller gains from CDS at test time.
- Whether CDS helps on non-reasoning tasks depends on whether a meaningful progression dimension exists for those tasks.
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. The paper studies many-shot chain-of-thought in-context learning (CoT-ICL) on reasoning tasks, identifying distinctive scaling properties compared to non-reasoning tasks and models. It reframes many-shot CoT-ICL as in-context test-time learning rather than pattern matching, proposes two principles (easy-to-understand demonstrations and smooth conceptual progression), and introduces Curvilinear Demonstration Selection (CDS) as an ordering method that yields up to 5.42 percentage-point gains on a math task with 64 demonstrations.
Significance. If the reported gains are shown to arise specifically from the ordering principles rather than demonstration selection, the work would provide a substantive reframing of long-context ICL as structured test-time learning, with implications for curriculum design in prompting. The empirical result on math tasks with many shots is a concrete contribution, though its attribution requires verification.
major comments (1)
- [Abstract / CDS description and experimental results] The abstract and method description attribute the 5.42 pp gain on the math task with 64 demonstrations to CDS ordering that enforces smooth conceptual progression (principle ii) after selecting easy demonstrations (principle i). No mention is made of controls that hold the demonstration set fixed while varying only the order (e.g., random permutation of the identical 64 examples versus CDS order). Without such isolation, the performance improvement cannot be unambiguously credited to the curvilinear progression rather than the choice of demonstrations, weakening the claim that many-shot CoT-ICL functions as structured in-context test-time learning.
Simulated Author's Rebuttal
We thank the referee for this constructive comment on isolating the contribution of ordering. We agree that the current presentation does not fully separate the effects of demonstration selection from ordering, and we will add the requested control experiments in the revision.
read point-by-point responses
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Referee: [Abstract / CDS description and experimental results] The abstract and method description attribute the 5.42 pp gain on the math task with 64 demonstrations to CDS ordering that enforces smooth conceptual progression (principle ii) after selecting easy demonstrations (principle i). No mention is made of controls that hold the demonstration set fixed while varying only the order (e.g., random permutation of the identical 64 examples versus CDS order). Without such isolation, the performance improvement cannot be unambiguously credited to the curvilinear progression rather than the choice of demonstrations, weakening the claim that many-shot CoT-ICL functions as structured in-context test-time learning.
Authors: We agree that an explicit ablation holding the demonstration set fixed while varying only the order is necessary to attribute gains specifically to the curvilinear progression. CDS currently combines selection of easy-to-understand examples (principle i) with curvilinear ordering (principle ii). In the revised manuscript we will add results comparing (a) the CDS-selected set in random order versus (b) the same set in CDS order, on the same math task with 64 demonstrations. These controls will be reported alongside the existing results, with updated discussion clarifying the separate contributions of selection and ordering. revision: yes
Circularity Check
No circularity: empirical performance claim from proposed method
full rationale
The paper reports an empirical study identifying properties of many-shot CoT-ICL, proposes CDS ordering guided by two principles, and measures a performance gain on a math task. No equations or derivations are presented that reduce to inputs by construction. No self-citations are invoked as load-bearing for uniqueness theorems or ansatzes. The central result is an observed experimental outcome rather than a fitted parameter renamed as prediction or a self-definitional claim. The analysis remains self-contained via direct reporting of task results.
Assumptions & free parameters
Cite this review
Pith. "Pith review of Many-Shot CoT-ICL: Making In-Context Learning Truly Learn." pith.science (2026). https://pith.science/paper/A2CQIYS2
@misc{pith2026260513511,
author = {Pith},
title = {Pith review of: Many-Shot CoT-ICL: Making In-Context Learning Truly Learn},
year = {2026},
howpublished = {\url{https://pith.science/paper/A2CQIYS2}},
note = {Machine review of arXiv:2605.13511}
}
read the original abstract
While many-shot ICL achieves remarkable performance, prior studies of its scaling behavior have mainly focused on non-reasoning tasks. In this work, we study many-shot ICL on reasoning tasks, with a particular focus on many-shot chain-of-thought in-context learning (CoT-ICL). Analyzing across non-reasoning and reasoning tasks and across non-reasoning and reasoning-oriented LLMs, we identify several distinctive properties of many-shot CoT-ICL. We further interpret these findings by viewing many-shot CoT-ICL as in-context test-time learning rather than scaled pattern matching, and suggest two principles: (i) demonstrations should be easy for the target model to understand, and (ii) they should be ordered to support a smooth conceptual progression. Guided by the principle, we propose Curvilinear Demonstration Selection (CDS), a simple ordering method that yields up to a 5.42 percentage-point gain on a math task with 64 demonstrations. Overall, our results reframe the long context window from a retrieval buffer into a structured curriculum for in-context test-time learning.
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write newline
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Reviewed June 30, 2026 · model on record in the stance chip above.
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