CONCEPT
The Capability Set
The full range of <em>achievable functionings</em> from which a person is substantively free to choose — the unit of analysis that capability theory proposes as the proper measure of human welfare.
The capability set is not a list of things a person does. It is the full range of things a person could do — the set of genuinely achievable functionings from which she is free to choose. The value of the capability set lies not in its exercise but in its existence. A person who could engage in creative work but chooses rest has a larger capability set than a person who rests because creative work is unavailable. The freedom inheres in the choice, not in the outcome. This concept is conspicuously absent from the AI discourse, which tends to celebrate every expansion of functioning as if it were an expansion of capability.
In The You On AI Field Guide
The capability set concept produces evaluative precision that output metrics cannot match. Consider two engineers using the same AI tool to achieve the same twenty-fold productivity multiplier. In the output space, they are identical. In the capability set space, they may be radically different. The
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