Behavior is the brain colliding with its environment. Both have a design. Both can be redesigned — but only one of them updates daily.
Inside the brain: eight ancestral traits — loss aversion, status seeking, tribal belonging, novelty hunger, scarcity, reciprocity, authority, and social proof. None of them were designed for a feed. All of them are still in charge.
Outside the brain: the environment we have built around those traits. Haidt's moral taste buds explain why our politics taste different to different tribes. Rosling's Factfulness shows how our threat instincts misread a world that is, on most metrics, getting better. The Environment frame ties them together — culture, infrastructure, attention, capital, and code form a second nervous system we now live inside.
The traits are not broken. The environment is engineered. Until you can see both — the firmware we cannot easily change and the environment we absolutely can — you will keep blaming people for what the architecture produced.
Design the environment, not the user. Hold the firmware constant; move the field around it.