The eternal statistical relativity of science! To an engineer, 0.1% error is practically perfection—they're building bridges, not searching for God particles. But mention that same 0.1% to a particle physicist who's trying to confirm the existence of a boson that appears for a nanosecond once every billion collisions, and they'll laugh you out of CERN. It's like telling a chef "close enough" when measuring salt versus telling a pharmacist "eh, roughly that amount of cyanide should be fine."