[shubb]

Well, sunlight has a big impact on people.

The the extreme example of this is seasonal depression, which is the reasons Scandinavian countries have very high rates of suicide.

But good scientific studies show most people are effected by lack of sunlight, and it impacts mood and alertness.

Windows in offices is an expensive problem to solve, but as sunlight frequency strip lighting is the same price as the yellow stuff normally seen in offices, I'm surprised we don't use it.