Life Is Not Special — Notes on Gates, Relations, and Definitions

A collection of six essays (English translation; the Chinese text is authoritative). Essays are not papers: they are observation and inference, and places marked [speculation] carry no evidence. 1. Relations and Gates — From a Switch to a Definition: from the gate down to concentration, judgment, relation; judgment is a comparison of concentrations; memory is a variable that grows on structure; relation is the only constraint that cannot be violated; definition = establishing a comparable relation. 2. Life That Is Not Special: from single cells (input/output, concentration, judgment, time, memory) to olfaction (the first machine that compresses molecules into meaning) to the brain (grown out of olfaction); high-dimensional abstraction = separable + compressible + combinable; definition is not naming but locating relations; life is not special because the same mechanisms repeat at different scales. 3. Multimodality — An Alignment Engineering Problem: physically all modalities are unified (electromagnetic field + molecular thermal motion); in engineering there is only alignment. 4. World Models, Embodied Models, and Digital Life — Where We Stand. 5. Cliffs and Slopes: Where Does Digital Life Grow From. 6. Home Robots: Body, Where the Brain Goes, and Who Maintains (with addendum). Each essay keeps its own DOI. Translated from the Chinese collection (10.5281/zenodo.24092888).