When do unconventional UX patterns create friction?

Unconventional UX patterns create friction when they violate expectations users have built from prior web experience, forcing them to learn new conventions instead of completing their task. Cognitive friction occurs when an interface appears intuitive but delivers unexpected results, such as a "Sign Up" button that navigates to an unrelated page.

Five types of friction emerge from unconventional choices: UI friction (cluttered interfaces, incorrect pattern usage), interaction friction (unintuitive elements), navigational friction (inconsistent placement, broken links), language friction (unclear microcopy), and system friction (slow load times). Small unconventional choices compound over time; repeated exposure to unpredictable patterns magnifies dissatisfaction and drives users to seek alternatives. Navigation is one area that must remain consistent throughout a site because disruptions cause disorientation and anxiety. A US Airways mobile site where the logo was mistaken for a hamburger menu illustrates how context mismatch between familiar elements and unfamiliar placement creates confusion. The risk of designing an "incredibly unique site that no one knows how to use" is that novelty without usability wastes the investment. Pattern misapplication (using shopping cart language for a donation experience, for example) creates wrong expectations about the nature of the transaction. Form friction from unnecessary steps, unclear field purposes, and forced account creation before purchase adds cognitive effort at the worst possible moment.