Language lab is installed in a school or college, the visible change on day one is modest. New computers, headsets, software. Students sitting in a room with technology. A teacher monitoring a dashboard. The novelty is there, but the transformation is not not yet.
The transformation comes later, across weeks and months of consistent use. And when teachers and administrators who have seen it describe it, the changes they point to are specific, consistent, and distinct from the changes that any other educational technology investment produces.