And then some more. And even more. And then maybe there will still be something new to look at and think about. In fact, discovering new stuff to look at, and extracting useful meaning from what we see, is among THE prime movers of politics, economics, culture, art, literature. Although Jakob Nielsen doesn't know this, we all have a built in addiction to visual variety itself.
Humans are color craving variety hounds.
We have a physical hunger for visual variability, and for very good reasons. We get direct hits of pleasure in the deepest parts of their brains simply by catching a glimpse of ripe fruit. This craving for a strong hit of something pleasurable and meaningful , delivered directly into our optic nerves, is what drives people to paint on cave walls, paint madonnas, commune with nature on their back yards or on the Discovery Channel, watch MTV . . . and surf the Internet looking for a vision fix. Nah, they just didn't have good video cards yet. Individual idiosyncrasies are always at play, of course.