Harrison was senior counsel for
Thomson Reuters through 2021, and went on to work with the
Federal Reserve Bank of Dallas.
Journalism In 2018, Harrison began publishing articles focused on technology and the media, often writing about the
Wikipedia community. Before that, he had contributed articles on politics, culture, and society to
Salon.com and
HuffPost. His first article on
Wikipedia came about after an editor at
The Outline suggested writing a literary critique of a Wikipedia article and examining how it developed behind the scenes. While riding the
New York City Subway on a business trip, he got the idea to interview the two Wikipedia editors who had contributed the most to articles on the topic for
The New York Times, who turned out to be teenagers. For another article in
The Outline, "Grandpa Teaches Bitcoin", he interviewed the Wikipedia editor who had contributed most to the article about
Bitcoin, who turned out not to own any Bitcoin. For
The Washington Post, he interviewed the most prolific editor on
English Wikipedia.'s
Washington, D.C. center, sponsored by
New America's Future Tense initiative. Harrison is being interviewed by Future Tense Editorial Director
Andrés Martinez, left. Starting in 2019, Harrison began writing regularly about "Wikipedia, digital knowledge, and the search for a fact-based world" in a bi-weekly column for
Slate magazine called "Source Notes". He also publishes his own "Source Notes" newsletter. Harrison describes Wikipedia as: "essential infrastructure, almost like a utility that provides a trustworthy resource to the broader Internet.” He has also written articles on Wikipedia for
Wired and
The Guardian. In September 2025, Harrison appeared on a
WBUR-FM radio program titled: "The right wing is coming for Wikipedia," speaking with
Meghna Chakrabarti, alongside
Molly White, about the state of Wikipedia and the public
criticisms of Wikipedia by the
Republican Party during the
second presidency of Donald Trump. In October 2025,
The Washington Post quoted Harrison in an article on Wikipedia, AI, and
Grokipedia. Harrison explained that "every major AI system trains on Wikipedia’s freely licensed knowledge. The irony is that Grokipedia will be built on the unpaid labor of the volunteer Wikipedia editors Musk has gone out of his way to vilify." In November 2025, Marry Harris interviewed Harrison for
Slate magazine discussing Harrison's opinions on Grokipedia.
The Editors In 2024, Harrison released
The Editors, a novel inspired by Wikipedia editors. It's a suspense novel about the company Infopendium, an "ubiquitous, crowd-sourced internet encyclopedia." == Personal life ==