Observable signal
An avatar, first-person wording, tone, disclosure, contact button, or a line such as “I’ll take care of that.”
AI ETHICS
How an organization can design a warm AI interface without blurring its role, capabilities, and responsibility.
What role might a visible signal suggest, what can the system actually do, and how can people recognize its limits, reach a person, or exit?
A small bicycle-rental business is considering a digital assistant for opening hours, pickup and return locations, and booking preparation. The assistant cannot change a booking, initiate payment, or make a binding promise. A warm and a neutral interface have the same capabilities; an information page without AI remains a genuine option.
An avatar, first-person wording, tone, disclosure, contact button, or a line such as “I’ll take care of that.”
For example: “The change has already been made.” This is a testable hypothesis, not an observed user reaction.
Documented capabilities, a clear limit, human responsibility, and a working handoff or exit.

A clarifies terms, goals, and causes. B compares competing hypotheses. D records uncertainty and revision. C formulates a better question and next step. The A → B → D → C sequence shifts the goal from maximizing trust to testable role and capability clarity.
The core cycle has four steps: exploration; reflection and analysis; decision and recommendation; feedback and evaluation. The five-step case elaboration adds exploration, reflection, decision, implementation/pilot, and final evaluation/optimisation; it is not the four-step basic cycle. Feedback must be able to change a concrete rule.
The separate advisory model has five phases: preparation/anamnesis; analysis/problem definition; advice/solution; implementation/documentation; evaluation/follow-up. Use it only for a concrete expert question; it does not replace K or qualified review.
A documented rule names the visible signal, a possible interpretation, the actual capability limit, the responsible human role, a real contact and exit route, and the condition that triggers a new review.
The bicycle-rental case is entirely fictional. The article does not claim an observed effect of a warm interface, a universal trust formula, or legal compliance. A concrete legal assessment requires qualified review of the actual system and context.