We really need to move beyond dichotomizing brain function. Allostasis vs cognition, prediction vs feedforward, categorical representation vs dimensional processing. Arguing that the brain is “for” or “not for” something can’t be the best way to build insight-generating evolutionary frameworks.
This seems like a false dichotomy. Yes, the purpose of the brain surely is allostasis. Like all organs, it exists because it helps us survive & reproduce. The brain justifies its energy paycheck by helping us find food, water, safety etc. But cognition is *how* it does that!