How do I know other minds exist?

You encounter other people through their actions, communication and the organized similarities between their bodies and yours. OPH treats their experiences as owned activity within their own continuing systems, rather than something made real by your observing it. Learning a content and undergoing its occurrence remain different relations. The essays give a precise reconstruction condition: a public record can determine an experience's content only if the same record never accompanies two different relevant contents in the admitted model. If it omits that distinction, no decoder can recover it from that record alone. A richer interface may convey the distinction without transferring the original episode's ownership. This clarifies what evidence could establish; it does not deduce every other subject's experience from outward behavior alone.

Also in Chapter 11: What Does Everybody Actually End Up Holding?.