Rule of three
A three-part phrase or list that builds through two beats and lands on the third, making the line feel complete and memorable.
See it
What it is
The rule of three is the writing instinct that a sequence of three feels complete: setup, continuation, landing. In rhetoric, a three-part parallel construction is a tricolon. Julius Caesar's 'I came, I saw, I conquered' survives because each short beat raises the stakes and the third closes the door.
Reach for it when a headline needs a memorable cadence, a pitch needs three proof points, or a sentence needs a final beat with more force. Order matters. Put the longest, funniest, or most consequential item third so the construction builds instead of merely counting.
Gotcha: three is a rhythm, not a quota. Cutting a necessary fourth step makes instructions worse, while padding two strong ideas with a weak third exposes the trick. Use it for emphasis and recall, not for facts that happen to arrive in another number.
Ask AI for it
Rewrite the key message as a tricolon using the rule of three. Create three parallel clauses, keep each under 10 words, and arrange them in ascending weight so the strongest claim lands last. Preserve every claim the source can support and do not invent a third benefit just to fill the pattern. Return five options, label the grammatical frame used in each, and identify the strongest option.