How I Imagine It

OK this is how I think it went down:

Dish Rack Engineer #1: Our dish rack design has undergone extensive testing and is ready for production. The design is solid. It's been tested with various sizes of plates, cups, and passed all our real world scenarios.

Dish Rack Engineer #2: Wait, let's remove some of the material leaving a gap that a standard glass tumbler can fall out of, shattering itself on the kitchen floor and causing general distress for our user.

Dish Rack Engineer #1: *shrugs* Oh, ok.