Long before anyone reads a sign, they read the light. People move toward the bright part of a room and slow down at the dim edge of it, registering brightness and contrast as direction without ever deciding to.
A lighting scheme that worked - the right ambience, the right hierarchy, the right spatial character - gets carried into a larger space, and something is off. The fixtures are the same. The colour temperature hasn't changed. The layout logic followed the same rationale. And yet the space doesn't perform the way the original did.