Three steps separate an expert's corpus from the first sourced answer. The expert stays in control at each one: they choose what they upload, they review how their avatar reasons, and they decide when to open it.
Publications, courses, talks, clinical notes. Avatar creation: multimodal import, clinical calibration and guided personality.
It speaks in the first person, ranks the expert's sources, and flags what it does not know. Nothing is opened before validation.
Every answer cites the expert's sources, in writing and by voice, available whenever you need it.