Why is it that people can't seem to grasp that the brain is just as biological as the kidney or pancreas? If your pancreas isn't producing the right chemicals in the right quantities at the right times for normal healthy functioning, of course we need to treat that. But if the brain isn't producing the right chemicals in the right quantities at the right times for normal healthy functioning, then obviously its willpower or laziness or whatever.

> Why is it that people can't seem to grasp

I imagine the perceived gap here is that “those” people understand thermodynamics and the failure to grasp is entirely in your hands.