Concepts

Arthaanu gives names to the machinery that turns raw input into durable meaning and then back into useful output.

Terminology

• Semantic object. The durable unit of meaning.
• Encoding. A representation of that object in a coordinate system: text, vector, tag, relation, or source reference.
• Trace. Provenance for a transform so no representation is silently equated with another.
• Projection. A rebuildable read model derived from the ledger.

The compression gradient

Raw inputs are noisy and high entropy. Encoders compress that material into semantic objects and encodings. Projections compress again into fast query surfaces: vector indexes, lexical indexes, graph edges, and temporal windows.

Write-side and read-side

The write side is conservative: append events, preserve provenance, and evolve meaning without losing history. The read side is fast and rebuildable: projections are refreshed from the ledger whenever they need to be corrected or optimized.