CONCEPT
Extension Without Deposition
The phenomenological distinction—grounded in Merleau-Ponty’s account of the body schema—between two kinds of change that AI tool-incorporation produces: the widening of reach that comes from incorporating a tool, and the deepening that comes only from habitual engagement with resistant material—changes that AI collapses into each other on the surface while keeping them categorically distinct beneath it.
When a practitioner incorporates a powerful tool into her habitual workflow, her body schema expands: she can now reach problems she could not reach before, build things she could not build before, operate across domains that were previously inaccessible. The expansion is real and valuable. But it is not the same as what occurs when a practitioner deepens her body schema through years of habitual engagement with resistant material. Merleau-Ponty's account of the body schema distinguishes these two kinds of change—extension and deposition—with a precision the contemporary AI discourse has almost entirely failed to register. Extension is what a tool provides: the body schema widens, reach increases, outputs improve. Deposition is what habitual practice with resistant material provides: the body schema deepens, motor intuitions form, perceptual attunements accumulate, and the practitioner develops the pre-reflective orientation toward her domain that
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