Scott Steinberg · Consultant, Analyst and Business Strategist
Manipulative interface design is not an accident of poor craft. These dark patterns are named, catalogued, tested against control variants and kept because the numbers improved. That makes them provable in a way most design disputes are not. A consultant to 3000+ brands across all manner of products, marketplaces, services and retail eCommerce, Scott Steinberg works on establishing exactly that.
Expert reports, declarations, deposition and trial testimony on pattern classification, subscription obstruction, drip pricing, interface interference, urgency and scarcity claims, UX, UI, CX, AI, personalized, the internal evidence of design intent and more.
Each pattern below has an established name, a documented mechanism and a measurable effect. Work helps because it converts an argument about impressions into an argument about a known technique.
These techniques carry established names and documented mechanisms in a literature that has been building for more than fifteen years, with taxonomies now cited by regulators on several continents.
Testimony identifies which specific patterns a product deployed, describes the mechanism each relies on, and places them against the published classification rather than against an expert's personal reaction.
The technique is asymmetry: enrolment achievable in two taps, exit requiring a phone call during business hours, a chat queue, or a sequence of screens each offering a reason to stay.
Testimony measures that asymmetry directly, comparing the step count, channel availability and time cost of joining against leaving, and sets the result against category convention.
Charges revealed progressively through a checkout exploit the commitment a shopper has already made, with the final total arriving after time and effort have been invested.
Testimony documents the point at which each cost became visible, the proportion of the total withheld until late in the flow, and how that compared to category practice at the time.
Visual weight, colour, contrast and placement can make one option effectively invisible beside another, and trick wording can invert what a checkbox actually does.
Testimony analyses the specific manipulations present, including preselected options, double negatives, decoy choices and buttons styled so the disfavoured path reads as a disabled control.
Countdown timers that reset, stock counts that never move, and offers that expire and immediately return are representations of fact, not decoration.
Testimony examines whether the scarcity or deadline shown corresponded to anything real in the system generating it, which the underlying code and inventory records will usually settle.
Notifications reporting that others are viewing, booking or buying are frequently generated from randomised templates rather than live activity.
Testimony addresses how such displays were produced and whether the activity represented corresponded to genuine user behaviour during the period.
Decline options worded to make refusal feel foolish or ungenerous shift behaviour measurably, and the effect is well documented in the literature.
Testimony addresses the framing deployed and how the wording of the two paths compared in tone, prominence and the burden each placed on the user.
Requiring an unrelated commitment to complete a task, bundling consent into a single acceptance, or enrolling a user in something adjacent to what they asked for all fall under this heading.
Testimony addresses what was actually required to complete the task and whether the bundled element bore any relationship to the user's stated intent.
Repeated prompts after a decline convert refusal into a cost the user pays each session, and the pattern works by attrition rather than persuasion.
Testimony addresses re-prompt frequency, whether a decline was durable, and what the interaction records show about how often users were asked again after saying no.
This is what distinguishes these matters from ordinary design disputes. Companies test variants against controls, measure the lift and document the decision, which means the record frequently shows a pattern was adopted because it worked.
Testimony addresses experiment records, funnel metrics by step, design rationale documents and the internal discussion around a variant, and what that record establishes about deliberateness.
What the field treated as acceptable persuasion has narrowed considerably, and a technique unremarkable in one year sits outside professional convention several years later.
Testimony establishes the design and disclosure standard applicable at the relevant date, drawn from published guidance, platform requirements and prevailing practice among comparable products.
The decisive evidence in these matters is usually internal: experiment records, funnel metrics and the design rationale behind a variant that shipped. Scoping for it early is what separates a strong case from an argument about screenshots. Any party may instruct.
Written opinions classifying the patterns present, their documented mechanism and what internal records show about their adoption.
Testimony naming a technique, explaining how it works and showing the record of it being chosen deliberately.
Responsive analysis of claims that a design was conventional, neutral or driven by considerations other than conversion.
Non-testifying pattern audit, experiment record review and discovery scoping for design and funnel evidence.
Scott Steinberg is an analyst, consultant and business trends expert with over 25 years of experience providing management and strategic consulting services to more than 3,000 businesses and brands ranging from startups to government agencies and Fortune 500 firms.
He has testified in sample areas including intellectual property — copyrights, trademarks and patents — patent infringement, marketing, branding, video games, mobile applications, consumer product development, and the growth and monetization of online distribution platforms.
He is the author of over 30 books and has published more than five thousand articles addressing areas including but not limited to marketing, technology, leadership, innovation, advertising, digital transformation, data privacy and social networks. He appears regularly on ABC, CBS, CNN and NBC, and has led seminars and training programs for organizations including Wells Fargo, the PGA Tour, Century 21, Ford, Dell and Procter & Gamble.
His consulting work has been broadly recognized. He has served as a thought leader for the American Bar Association and Corporate Counsel magazine, and has received honors from the International Association for Scholastic Excellence, Fortune, and the 21st Century Icon Awards, among others.
A deceptive patterns expert witness identifies which established manipulative design techniques a product deployed, explains the documented mechanism behind each, and examines the internal record of how and why those designs were adopted. The field has named taxonomies, so the analysis often rests on published classification rather than personal impression.
They describe the same techniques. The field and several regulators have shifted toward deceptive patterns as the preferred term, partly for clarity and partly because the older phrase carried connotations its originator later regretted. Both refer to interface designs that steer users toward choices against their own interest.
The intent record. Organisations test interface variants against controls, measure the conversion lift and document which version shipped and why. That produces contemporaneous evidence that a pattern was selected because it outperformed a neutral alternative, which is a far stronger footing than arguing about how a screen looks.
The classification is not. These techniques carry established names, documented mechanisms and published taxonomies cited in regulatory guidance across several jurisdictions. Whether a specific implementation matches a named pattern is assessable against that literature. Whether it violates a particular law remains for the court.
It goes deeper on one subject that appears as a component of both. The UI practice addresses interface design broadly, including usability and accessibility. The privacy practice addresses consent and data handling. This practice concentrates on manipulative technique, its classification and the evidence of deliberate adoption.
Initial conversations about scope, timing and conflicts are without charge. Helpful detail includes the product, the specific screens or flow at issue and the period involved, plus any expert disclosure deadline already set.
A conflicts check is run before any substantive discussion. An initial note listing the party names and a one-line description of the dispute is enough to start; please hold privileged or confidential material until the check clears.