Fair point, and nyrikki has it right: the engine never sees units. Everything is normalized to dimensionless magnitudes before the search, so that formula is an

Fair point, and nyrikki has it right: the engine never sees units. Everything is normalized to dimensionless magnitudes before the search, so that formula is an empirical fit on pure numbers, not a physical law. I should say that more clearly in the README. Enforcing dimensional consistency during the search is a known extension (AI Feynman does a version of it) and honestly it's a good roadmap item, a dimensionally sound form would be more trustworthy.