Noam Cohen is a journalist and the author of “The Know-It-Alls: The Rise of Silicon Valley as a Political Powerhouse and Social Wrecking Ball.” From 2007 to 2013, he wrote the New York Times’ “Link By Link” column, which covered the influence of digital technologies on global culture and the economy, including some of the Times’ earliest coverage of Wikipedia, Bitcoin, and Twitter. Since then, Cohen’s op-eds in the Times have exposed the ties between Silicon Valley’s disruptive values and Donald Trump’s candidacy and election.