Segal's ascending friction thesis argues that eliminating mechanical friction relocates difficulty to a higher cognitive level — from syntax to architecture, from implementation to judgment. The argument treats all friction as a single substance differing only in level. The deep-ecological reading insists on a qualitative distinction. Mechanical friction — the struggle with syntax, the hunt for a missing semicolon, the tedium of configuration — develops skill. It operates within the self as currently constituted; the practitioner becomes more competent without becoming different. Existential friction — the encounter with material that resists the frameworks one has relied on, the experience of confusion that cannot be resolved by applying existing knowledge more diligently — develops the self. It forces the expansion of identification that Næss called Self-realization.
The distinction matters practically because AI tools differ in how they treat the two types. AI tools eliminate mechanical friction effectively — this is what they are designed to do, and they do