Not X but Y
The negative half names something no one claimed, so the positive half sounds larger. It adds weight without adding a claim. State the point directly. Keep a contrast only when the negative half corrects a belief the reader actually holds, or when both halves carry information.
Watch for
not X but Y; not just, not only, or not merely X, but Y; it's not X, it's Y; the reversed form X rather than Y; the same contrast split across sentences ("This does not mean X. It means Y."); a clipped negative tail ("..., no guessing"). The formula appears in every language; treat the equivalent construction the same way.
Before and after.
Before
It's not just about the beat riding under the vocals; it's part of the aggression and atmosphere. It's not merely a song, it's a statement.
After
The heavy beat adds to the aggressive tone.
Before
This does not mean every choice is equal. It means there is no external system that confirms which choice is right.
After
No external system confirms which choice is right, although the choices still have different consequences.
Before
The options come from the selected item, no guessing.
After
The options come from the selected item without forcing the user to guess.
Is this one in your draft?
Paste it in. If it’s there, it gets marked with this exact reason.
Check my draft