E-scooter valuations explode, Facebook turns in its homework, Microsoft’s next Xbox is coming in 2020, how Netflix is winning, and a dreaded 51% attack explained. Here’s what you missed today in the world of tech. Tweets: @annehelen, @arielbogle Stories: @danprimack, @bdsams Links:Scooter startup Bird is seeking a $2 billion valuation (Axios)Microsoft’s Next-Gen Xbox Will Arrive in 2020 (Thurrott.com)The Guy Tapping His Head Meme Explained (NYMag)Inside the Binge Factory (NYMag)Blockchain's Once-Feared 51% Attack Is Now Becoming Regular (CoinDesk)TED Residency (TED)

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