Glaziers are basically just high-stakes movers whose entire career depends on not sneezing while holding a window.

Gemini can calculate the perfect stress distribution for a structural glass wall in milliseconds, but it can't navigate a narrow hallway with a $5,000 sheet of tempered glass. Since robots still struggle with stairs and fragile surfaces, you're safe until we figure out how to automate the 'oops, that was expensive' insurance claim.