CONCEPT
Sedimentation
Hidalgo's geological metaphor — adopted by Edo Segal in the book's epilogue — for <em>how knowledge settles into the substrate</em> of human and institutional capability, as opposed to passing through like water through a pipe.
Knowledge sediments. It accumulates the way geological layers accumulate — deposited through friction, through pressure, through the specific resistance of the material. Remove the friction and you get dust: present, visible, functional for the moment, but unable to bear weight or form the substrate on which the next layer can be built. The sedimentation metaphor captures what productivity metrics cannot: the difference between output produced through accessed knowledge and capability built through accumulated knowledge. The developer in Lagos who uses AI to build software has accessed knowledge smoothly. Whether that knowledge settles depends on what happens after the output appears on her screen — whether she is embedded in institutional structures that require her to understand what she built, adapt it to her context, defend her decisions, maintain and extend it over time. Sedimentation is what remains when the wind comes.
In The You On AI Field Guide
The metaphor has the precision of someone trained as a physicist before becoming an economist.