Scope note: This article explains the topic using public research and common engineering patterns. Retrieval, reranking, generation, and source-selection pipelines vary by product. Nothing here represents a disclosed universal ranking weight or a citation guarantee.
Autoregressive models generate text token by token, but there is no valid fixed ‘per-step drift rate’ that can be multiplied into a sentence-level distortion formula. Public evidence also does not show that a product automatically rejects a source because its sentences are complex.
Restatement errors have multiple causes
Retrieval, context sufficiency, prompting, model version, decoding settings, and ambiguity in the source can all affect a summary. Sentence length is only one readability factor and should not be presented as a probability equation.
Clear expression is still valuable
Sentences that carry too many claims, omit the subject, or separate a condition from its conclusion are easier for both people and systems to misunderstand. Brevity is not the goal by itself; faithful expression is.
Practical implications for content teams
- Organize each passage around one central claim.
- Keep necessary terminology, scope, and causal limits.
- Use human review or controlled comparisons to test summary fidelity instead of using sentence length as a proxy.
Boundary and conclusion
Readability can support accurate interpretation and restatement, but it does not prove a higher citation probability.
