A reason helps the user decide whether an item is worth opening, not to persuade them to open it

What it is

A reason sits beside the item and success is often defined as “more people opened it.” That treats explanation as selling. Reasons as open-or-skip aid rewrite success: the user decides faster and more accurately whether this row is worth opening — open what should be opened, skip what should be skipped — rather than being talked into extra clicks.

Predictability and acceptance sit one layer up: whether the person thinks the system has a rule. Here the object is the few seconds before this particular open.

Why it happens

Opening is a costly commitment: time, bandwidth, possible disappointment. The decision needs information that can flip a threshold: sequel or new author, because you just finished this class or because it is selling. Promotional copy pushes the threshold toward “open” and does not supply the resolution skipping needs, so skip quality falls with it.

If the product scores reasons on clicks, copy is trained to persuade: inflate closeness, hide “this is an ad,” omit “you may already have seen it.” An aiding reason lets the user leave the item unopened and still feel the judgment was sound. Persuasion’s mark is more opens; aid’s mark is opens and skips lining up with later satisfaction.

Studying it

Hold ranking fixed. Three copy conditions: no reason, aiding reason (a fact that can flip the threshold), persuasive reason (evaluative, imperative). Measure open rate, skip rate, completion or bounce after open, decision time, later “I wish I had not opened that.” Independent variables: copy goal (aid vs persuade), whether the information makes skip possible. Dependent variables: agreement of open/skip with later utility, not total clicks.

Clicks up and “wish I had not” also up means the reason is persuading, not aiding. Do not fold an acceptance questionnaire into this agreement — acceptance is of the system; aid is of this action.

Where it stops holding

On media that yield no information until opened (short video with no cover or title), open/skip aid has almost no fulcrum; put the reason after open, on “why this is next.” On search result pages the query already aids; a reason that repeats the query is noise. This entry does not require the reason to be faithful to the model (that is another layer), and it does not treat tracking unease.

Applying it

• Write reasons against a success definition other than clicks: completion after open, deliberate skip without later regret. Take “CTR of the reason group” out of the scorecard.
• Each reason must contain at least one fact that can support a skip (already seen, wrong type, promoted). Rewrite sentences that only push “open.”
• Check: ask people “given this reason, open or skip, and why.” If they can skip on the basis of the reason, aid holds. Then compare regret after opening — the persuasion group should be higher.

Related

• Same group: L6.07.2 Reasons must come from the actual ranking basis; a post-hoc story is another kind of hallucination · L6.07.3 Reasons expose data sources and can make users feel tracked · L6.07.4 Reasons make recommendations rebuttable, so users can correct a wrong profile · L6.07.5 The same sentence on every item conveys no information
• Nearby: L6.01 Recommendation Reasons · L5.05 The Moderation Principle of Transparency · L5.08 Counterfactual Explanations
• Search terms: reasons as open-or-skip aid · decision-support why · persuasive explanation