Death rays at the Vdara hotel pool in Vegas

It is somewhat remarkable that architects did not anticipate this. I know that early in architecture school students are taught how to calculate the line a shaft of sun will follow throughout the day at any given latitude.

And I would imagine that the architects on that particular job have even more experience that the above-mentioned students. And pretty much understand that the building is being built in essentially a cloud-free environment.

So they couldn't see this coming?