1) The document discusses a briefing on learning health systems presented at an AMIA symposium.
2) It outlines the challenges of realizing a learning health system that can continuously learn from all patient data and experiences to rapidly improve practices.
3) The briefing describes efforts by the Learning Health Community coalition of 91 organizations to develop standards and governance to enable learning health systems, and proposes that realizing these systems may require a new field of "cyber-social learning systems."