Grammar correction and AI rewriting solve different problems. Treating them as one action can produce a result that is technically polished but no longer sounds like the person who wrote it.
What grammar correction should change
Conservative correction focuses on objective writing problems: spelling, grammar, punctuation, capitalization, typos, and small required grammar words. It should leave sentence order, vocabulary, tone, and layout close to the original unless a change is necessary for correctness.
For example, “The results looks better then expected” becomes “The results look better than expected.” The meaning and voice stay intact.
What a clearer rewrite may change
Rewriting is appropriate when the sentence is grammatically acceptable but difficult to understand. It may rephrase, split, combine, or reorder sentences to improve clarity and natural flow. The facts, asks, caveats, constraints, tone, intent, names, links, commands, and technical values still need to remain accurate.
Use correction when the draft already sounds right
- A quick Slack message contains one typo.
- An email needs punctuation and capitalization fixes.
- A carefully written statement must retain its exact wording and structure.
- A list or sign-off should remain in the same layout.
Use rewriting when clarity is the actual problem
- The main point appears too late in the message.
- Several sentences repeat the same idea.
- The wording is unnecessarily complicated.
- A non-native writer knows the facts but wants a more natural flow.
Why Polish separates the two modes
Standard Polish is strict copy editing. It fixes grammar, spelling, typos, punctuation, and capitalization while preserving wording and text shape. More Polish includes those corrections and can then rewrite for clarity, simplicity, and natural flow.
Separating the modes makes the outcome easier to predict. You can choose a minimal correction for a nearly finished message and a stronger edit only when the draft actually needs one.
Review both kinds of AI output
Even a conservative correction can be wrong, and a rewrite has more opportunities to change nuance. Review facts, dates, amounts, names, promises, instructions, and sensitive statements. For legal, medical, financial, academic, or employment-related writing, use appropriate professional judgment rather than relying on an AI result alone.
The best choice is not the strongest edit. It is the smallest edit that solves the real problem while preserving what the writer intended to say.