Information and Causal Access

We propose a manifestation-and-causality view of information. The motivating problem is that the term information is used for several different objects at once: raw differences, symbols, messages, semantic content, causal signals, and epistemic gain. The present note isolates the common structural core relevant to the repo's broader theory program. Our main claim is that information should be understood as distinguishability that is accessible under a probe and transmissible under a causal channel. In this language, information is not a free substance but a constrained relation between structure, interaction, and access.

This framing clarifies why speed limits matter. The statement that information cannot travel faster than light should be interpreted as a constraint on usable causal access, not merely as a slogan about abstract bit strings. The paper also distinguishes three levels: latent difference, accessible information, and stabilized knowledge. This provides a cleaner bridge from physical interaction to observation, symbol, and later knowability. The note is conceptual rather than theorem-complete, but it defines a clear downstream program for relating information, causality, probe design, and cross-level manifestation.