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I personally have concerns about this trend of quoting experts in our articles. If a field has enough experts, some are likely to have minority or fringe beliefs, and can be cherry picked. And I find it harder to evaluate an expert's credentials than I do to just apply WP:RSPSOURCES or WP:MEDRS. Experts speaking directly also shortcut other processes, such as academic paper peer review, or a newspaper or book's editorial process. At its core, it really feels like WP:SELFPUBLISH to me, and a way for POV to creep into the encyclopedia.