David, Joanna and Christopher attempt to explain "5G"-amazing future tech or vague marketing term? Then they grab reporter Sarah Needleman to shed light on something even more confounding: the open office. Phone-booth pointers and personal-hygiene anecdotes ensue. After a quick chat about boring gifts that people will totally love, David interviews Twitch CEO Emmett Shear and asks: Why do millions of people like watching other people play video games?