The clearest, most literal version of this happened in a specific garage, on a specific date, and produced Silicon Valley. Gordon French and Fred Moore founded the Homebrew Computer Club and held its first meeting on March 5, 1975, in French's garage in Menlo Park -- the occasion was the arrival in the area of the first MITS Altair 8800, an early microcomputer kit. Thirty-two people showed up.[1] The club kept meeting monthly, moving to a Stanford auditorium as it grew, until December 1986.[1] Steve Wozniak was in that room, and later credited that first meeting directly as the inspiration for the Apple I -- which he then built specifically to bring back and show off at the club, debuting it there in 1976.[1] Steve Jobs was a member too. So was Harry Garland and Roger Melen, who went on to found Cromemco; George Morrow, who founded Morrow Designs; Adam Osborne and Lee Felsenstein, who founded Osborne Computer; Bob Marsh, who founded Processor Technology; and Jerry Lawson, who built the first cartridge-based video game console.[1] None of these people needed a credential to walk into that garage. They needed to already be someone who showed up to a hobbyist meeting in a specific California suburb in 1975 -- and once they were in the room, what they built there compounded into companies, then an industry, then a regional economy that still runs on the same basic geography sixty years later.
The mechanism isn't unique to garages full of electronics hobbyists -- it's the same finding this site keeps landing on from completely different directions. Code-switching's real cost only exists because shared linguistic shorthand only forms between people who've actually spent time in the same room together -- it can't be taught from outside it. Local media can carry "soda" versus "pop" and national media structurally can't, for the identical reason: a national broadcast is built for an audience assumed to share no room at all, while a local station's whole audience already does. Which countries' cultural losses become news depends on whether a foreign bureau was already in a specific room when the story happened, not on the scale of the loss. And what becomes common knowledge traces back to whose publisher put a book in front of the room that decides what gets talked about, not which book was more rigorous. Four completely different domains, one identical mechanism underneath all of them: the room decides what you can know, build, or become known for -- not the other way around.
Once you see the mechanism, its opposite becomes just as visible: the cost of never being let into a room at all. That's not a hypothetical -- it's the entire premise of who was actually building things while excluded from the credentialed room elsewhere on this site, and it's the reason access to a specific room, at a specific moment, is worth treating as a real, structural fact about a person's or a country's history -- not a soft, unmeasurable thing like "luck" or "networking." A garage in Menlo Park was a room a small number of specific people were in. A foreign bureau is a room a small number of specific correspondents are in. A publisher's marketing budget is a room a small number of specific books are in. Being outside any of those rooms isn't a personal failing, and being inside one isn't a personal virtue -- it's a fact about where you physically or professionally were, on a specific date, that later gets mistaken for a fact about who you are.
Why does this matter? Most explanations for why some people, places, or stories end up mattering more than others reach for talent, effort, or rigor as the deciding factor -- and all three are real, but none of them are sufficient on their own, because plenty of talented, hardworking, rigorous people and stories never got near the room where it counted. The more honest and more useful question, for a person or for a country trying to understand its own history, isn't "who was best." It's "who was in the room, when, and why" -- because that's the version of the question that actually has a traceable, documented, sourced answer, the way this site tries to answer everything else.
Get in where you fit in is the harder, more personal half of this same finding -- proximity isn't something you can aim at directly, and the people who never get called into a room aren't always missing talent. Sometimes they're missing the self-knowledge to recognize the room as theirs when it opens.