Ultimately, "disability" (the word irks me because it's a weasel word) is ultimately normative and teleological. That is, someone is disabled when they lack som

Ultimately, "disability" (the word irks me because it's a weasel word) is ultimately normative and teleological. That is, someone is disabled when they lack something they ought to. Pace Hume about is/ought, human nature is your reference point about what ought to be the case. Despite what teleophobic biologists claim, biology could not function without telos. Indeed, no science could because there would be no explanation for why a particular effect results from a particular cause. In a mechanistic universe, no such teleology exists and nothing truly makes sense anymore. But for the most part, mechanists, like skepticists, exist only in highly rarefied environments like graduate seminars, or deployed selectively to rationalize some perverse desire. And when this mechanism does enter daily life, it does so to their detriment.