Marketing always shapes a choice. Product order, price presentation, a recommended plan and even the absence of a default alter what people notice and do. The ethical problem is not influence itself; it is influence that depends on deception, hidden information, fabricated popularity, obstructed cancellation or exploitation of a vulnerability the seller would rather the buyer not examine. A useful campaign reduces the work of finding a suitable option. A dark pattern increases the work of protecting oneself from the seller.
Start with the decision the customer is trying to make
A behavioural tactic has no ethical meaning outside its purpose. A reminder about an appointment the customer requested can prevent a missed service. The same notification system can become harassment when it fires repeatedly after a refusal. A default can preselect the safest ordinary configuration or quietly add insurance. Scarcity can report two real seats remaining or simulate urgency with a timer that resets.
Write the customer’s decision in plain language: “Do I want this product at this total price under these renewal and cancellation terms?” Then list the information needed to answer. Product limits, recurring charges, delivery cost, data use, sponsorship and return conditions belong before commitment when they would change a reasonable person’s choice. Persuasion should organise that evidence, not make it harder to see.
Set a counterfactual: if the interface were neutral and the customer had time, would the same person plausibly choose this option? Marketing does not need to eliminate emotion, design or recommendation. It should not rely on a false fact, accidental consent or fatigue. That standard is stricter than “conversion improved” and more useful than calling any effective message manipulation.
Scarcity and urgency must be facts with scope
The UK Competition and Markets Authority’s evidence review finds that scarcity and popularity claims can accelerate decisions, reduce comparison and shift attention. Such claims may inform customers when they are accurate, but false or poorly scoped claims can push people toward outcomes that do not match their preferences. CMA: evidence review of online choice architecture
A defensible scarcity message names the item, inventory basis and time. “Two rooms left at this price for these dates” is more useful than “selling fast.” A deadline should produce a real change when it expires. If a promotion can be extended, explain the condition rather than running a perpetual countdown. Popularity claims should identify the population and period; “most chosen plan” is meaningless without a denominator.
The European Commission’s 2022 sweep examined 399 retail websites and applications. Authorities identified potential dark-pattern breaches on at least 37%, including 42 sites with fake countdown timers, 54 with false hierarchy and 70 hiding important information. That enforcement sample is not a census of all commerce, but it shows these are operational consumer-protection issues rather than abstract ethics. European Commission: 2022 dark-pattern sweep
Social proof is evidence only when the people are real
Ratings, testimonials, case studies and live activity can reduce uncertainty. They can also fabricate a crowd. The minimum standard is authenticity: the reviewer exists, had the represented experience and did not make a claim the advertiser cannot substantiate. Material incentives and relationships should be disclosed where the audience will notice them, not buried in a profile or terms page.
The US Federal Trade Commission’s consumer-reviews rule covers fake or false reviews and testimonials, including content attributed to people who do not exist or who did not have the stated experience. Its endorsement guidance also requires clear disclosure when compensation or another material connection could affect how an audience evaluates the endorsement. FTC: rule banning fake reviews and testimonials FTC: endorsement, influencer and review guidance
Publish how a rating is produced: verified purchase or open submission, inclusion period, moderation rules and whether all eligible responses count. Do not suppress negative reviews because they are inconvenient; remove content under a documented rule for fraud, privacy, abuse or irrelevance. A customer story can illustrate an outcome but cannot establish the typical result without representative data.
Defaults and friction reveal whose interest the design serves
A default saves attention when one option suits most users or protects them from an avoidable error. It exploits attention when it prechecks a paid extra, broad data sharing or automatic renewal that a reasonable buyer would want to consider. The ethical questions are predictable: who benefits, how costly is inaction, how visible is the default and can the customer reverse it without punishment?
The OECD defines dark commercial patterns as digital practices that steer, deceive, coerce or manipulate consumers into decisions against their interests. Its report also discusses “bright” patterns that make welfare-enhancing choices easier. The distinction is not that one interface influences and another does not; it is whether the architecture supports informed autonomy or subverts it. OECD: Dark commercial patterns
Test symmetry. If sign-up takes two clicks and cancellation requires a phone queue, the extra friction is serving retention rather than understanding. If accepting tracking is a coloured button and refusal is hidden behind several menus, visual hierarchy has become pressure. Necessary safeguards—identity checks before closing a financial account, for example—can add friction, but the reason and path should be explicit.
Reciprocity, loss framing and commitment need boundaries
A useful free tool can create goodwill, but it should not generate a concealed debt. State what is free, what data is collected and whether contact will follow. A trial should disclose the renewal date and price before enrolment and send a reminder when that helps the customer avoid an unintended charge. “No credit card required” and “cancel anytime” are facts to honour, not decorative reassurance.
Loss framing can make consequences vivid: “Without backup, these files would be unrecoverable” may describe a real risk. It becomes abusive when it magnifies unlikely harm, targets fear unrelated to the product or implies that refusing an upgrade is reckless. Compare absolute outcomes and alternatives. Financial, health and safety marketing carries a higher burden because anxiety and urgency can impair a consequential choice.
Commitment devices can help a customer pursue a goal they already chose, such as saving regularly or completing a course. They should include a clear escape route and should not turn a small initial action into permission for escalating contact. The previous article’s advice to create “greed” in customers fails this test: it treats a person’s vulnerability as the campaign objective rather than a risk to design around.
Build an ethical influence review into experiments
The FTC’s dark-pattern report identifies false urgency, obstructed cancellation, hidden information and sneaking unwanted items into baskets among recurring designs. The EU Digital Services Act separately prohibits dark patterns on covered online platforms. Compliance depends on jurisdiction and facts, but both regimes make clear that interface design can be regulated conduct. FTC: Bringing Dark Patterns to Light European Commission: Digital Services Act protections
Before an A/B test, record the intended customer benefit, the behavioural mechanism, material facts shown, vulnerable groups, refusal path and reversal path. Predefine guardrails: complaint rate, refund request, accidental subscription, cancellation completion, customer-support contacts and delayed regret. A variant that lifts purchases while increasing refunds and confusion has not demonstrated better persuasion; it may have demonstrated a better trap.
Review after launch with people outside the growth team. Legal review asks whether a claim or flow is permitted. Design review asks whether it is legible and accessible. Customer-support data shows where understanding failed. Ethics asks whether the result would remain acceptable if the customer saw the mechanism explained. The durable commercial case follows: trust is not a trigger. It is the accumulated result of accurate promises, reversible choices and a seller who does not make customers fight the interface to protect themselves.
