Umwelt Engineering
2026
A framework for designing the linguistic cognitive environments AI agents reason in. If prompt engineering is what you say, and context engineering is what you show, then umwelt engineering is the world the agent can think in — shaped by the vocabulary it’s allowed to use.
4,470 trials across 4 models. Removing the verb “to be” selectively degrades syllogistic reasoning while leaving causal reasoning intact. The constraint doesn’t make the model dumber — it reshapes what kinds of thinking are available.
Paper + Code + Data
