Tim Wu joined the Biden administration and that sound you hear is a big collective gulp from Silicon Valley. A tweet undo button has been unearthed. Turntable.fm has resurfaced. New data suggests the death of silicon valley has been exaggerated. And of course, the weekend longreads suggestions.Sponsors:Audible.com/techmeme or text techmeme to 500-500Links:A Leading Critic of Big Tech Will Join the White House (NYTimes)Here’s what Twitter’s rumored ‘undo send’ feature could look like (The Verge)Turntable.fm is back from the dead — and now there are two (The Verge)Survey finds that the reported exodus of tech companies from San Francisco's Bay Area is 'greatly exaggerated' (Insider)Weekend Longreads Suggestions:The problem for Paramount+ (and every other streamer)? Everyone already has Netflix. (Recode)Who Really Writes Twitter’s ‘Trending’ Summaries (OneZero)Blockchain, QR codes and your phone: the race to build vaccine passports (Protocol)How a tiny startup is reinventing the DVR for the cord-cutter era (Fast Company)China’s Tencent Becomes an Investment Powerhouse, Using Deals to Expand Its Empire (WSJ)I have one of the most advanced prosthetic arms in the world — and I hate it (Input)See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.