Why does the effect seem to be reversed when out in nature? When I walk in the woods, the visual complexity is arguably much higher than it ever gets in cities, even on a busy highway. But the mental effect seems to be rejuvenating.
It's partly because you're not paying attention. Next time you're out in the woods, try to still hunt for a while. It's a hunting method where you move extremely slowly throughout the woods from cover to cover while watching for animals. You'll find that it takes a lot of mental focus to maintain that level of vigilance.
I think the fractal patterns match our million year old brains expectations, "stuff" in the article refers to "stuff i need to focus on" (which is everywhere in traffic but mostly in front of you while hiking, and in general, focusing 100 yards away is better for the eyes, and a good walk helps everyone feel better. But this is mostly off topic opinion.
I feel the opposite, in nature I find the complexity much less. Things are not really moving, they are static. Colors are also very much within similar range. You can be very much in passive mode and enjoy the scenery vs actively trying to process.
This reality might be like a quantum observation field - cities are full of conscious minds actively observing/measuring/collapsing probability states. Like millions of wave function collapses happening constantly. Nature lets those quantum states breathe, maintaining possibility spaces longer.
Some people thrive in that urban collapse-field - they want that constant measurement and definition. Others need more quantum coherence time, seeking out spaces where consciousness can maintain superposition longer. It's not about visual complexity or stimulation, but about how much conscious observation is forcing reality into defined states.
Cities vs nature isn't just about peace or chaos - it's about the density of consciousness collapse. Like the difference between metal (constant forced collapse) and ambient music (sustained possibility states).
