Like with the new Apple campus, the first day it was open, visitors such as John Gruber noted there were signs everywhere warning about how slippery the ground

Like with the new Apple campus, the first day it was open, visitors such as John Gruber noted there were signs everywhere warning about how slippery the ground was because apparently it wasn't designed with the idea of dealing with being wet from rain which made it very slippery, or how the showcase room while beautiful was not practical for it's intended purpose. Apple's builders do seem to have an issue with designing for use versus appearance.