Anyone who has read Christopher Alexander's "A Pattern Language"[1] can easily extrapolate his ideas to cubicles. Alexander pointed out that if you drop any human in an open field with a tree, within a few minutes they'll be sitting with their back to the tree, facing the sun.

We are animals. We get physically and psychologically uncomfortable when our vision is restricted and our backs are exposed. It means we are vulnerable to predators. As such, cubicles are pretty much a nightmare.

[1] Christopher Alexander wrote about architecture, but his terminology was adopted by the design patterns movement in computer science, so it's familiar to most programmers. It's one of two building architecture books I recommend to programmers - the other is Stewart Brand's "How Buildings Learn".