Macfarlane describes the Paris-catacombs crawl that produced sympathetic-kinesthetic claustrophobia in over a hundred readers. Then he says: I once thought about, when I was writing Underland, I thought about getting a business card which just read: I do these things so you don't have to.1
The joke compresses something serious. The writer's job-description in his framing is to undergo experiences the reader won't undergo and transmit the experience through prose. He is paid in book-sales for taking the bodily risk. The reader is paid in vicarious-experience that costs them nothing physical.
I sat with this. The business-card framing makes the writer-as-experience-proxy explicit in a way most writers don't. Investigative-journalists do something similar but rarely articulate it. Memoirists do something adjacent but typically frame it as personal-truth-telling rather than experience-curation. Macfarlane's framing makes the role load-bearing: the writer is a specialized expert in undergoing-and-transmitting.
This spark touches visceral sympathetic kinesthesia directly — the business-card is the proxy-role that the transmission-mechanism serves. It also touches Macfarlane relational writing methodology — the WITH/BY-rivers methodology requires the writer to undergo the river to write it. And it touches vicarious experience as influence tool from behavioral-mechanics — the proxy-role has structural similarity to influence-craft's deployment of vicarious-experience to bypass evaluation.
Essay seed: The Experience-Proxy Writer — name the role as a distinct craft-position. Map its ethics (consent; warning; representation). Map its labor-economics (publishing-advance-funded fieldwork; insurance; physical-risk underwriting). Map its history (the explorer-writer tradition; the war-correspondent tradition; the wilderness-writer tradition; the catastrophe-witness tradition). The piece would establish experience-proxy as a named position alongside journalist, memoirist, essayist, novelist.
Concept page candidate: If the proxy-role recurs in other vault sources (Wilson on undergoing-history; Bilton on going-to-Ulbricht's-sushi-place; Karlsson on summoning-cultures-via-incubation), it might warrant a dedicated concept page on the writer-as-experience-proxy archetype.
[ ] A second source touches this independently [ ] Has survived two sessions without weakening [x] The Live Wire second framing holds [x] Has a falsifiable core claim (the role exists as a distinct craft-position vs the role is just a metaphor)