Names the domain (complex reasoning/problem decomposition) and some actions (decompose into atomic units, confidence tracking, backtracking), but the actions are somewhat abstract and methodology-focused rather than concrete task outcomes.

Clearly answers both 'what' (decompose complex problems into atomic units with confidence tracking and backtracking) and 'when' (for genuinely complex reasoning, not everyday questions, with explicit trigger terms listed). The negative scope ('not everyday questions') is a helpful addition.

Includes explicit trigger terms like 'atomise', 'complex reasoning', 'decompose problem', 'structured thinking', 'verify hypothesis', but these are more methodological/technical terms than what users would naturally say. Users are more likely to say things like 'break this down', 'think step by step', 'analyze this carefully', or describe the actual problem domain.

The terms 'complex reasoning' and 'structured thinking' could overlap with other reasoning or problem-solving skills. However, 'atomise' and 'atomic units' are fairly distinctive. The description could conflict with general chain-of-thought or step-by-step reasoning skills.

Generally efficient but includes some unnecessary content like the 'Honest Caveat' section explaining that confidence numbers aren't calibrated probabilities (Claude knows this), and the anti-patterns section restates what 'Don't use for' already covers. The atom type table and confidence thresholds are useful but could be tighter.

The core loop and execution guide provide clear steps, and the output format is concrete. However, there's no fully worked example showing the actual decomposition process end-to-end — the examples section only shows invocation commands, not what the reasoning trace looks like in practice. The atom structure is described but never demonstrated with real content flowing through the phases.

The multi-step process is clearly sequenced with Phase 0 setup and Phase 1+ iteration. Explicit validation checkpoints exist (confidence thresholds trigger backtracking), there's a clear feedback loop (verify -> low confidence -> backtrack -> restore -> try alternative), and the atomicity gate provides a clear decision point at each iteration.

The content is well-structured with clear sections and headers, but it's all in one file with no references to external files for deeper content. The modes, atom types, and execution guide could benefit from separation — the skill is ~130 lines and some sections (like a full worked example) would be better as linked references. However, it's not a wall of text and sections are logically organized.