The premise that needs to be scrutinized is whether what we are deeming a “disability” is actually that. Thinking in systems, a component’s calibration (whether it is able or not) to a system can change due to the system as a whole changing (political, economic, cultural pressure).

One example is how the change from hunter/gatherer to agricultural lifestyles may have rendered the strengths of the hunter’s brain a weakness in an agricultural society.