Howdy, folks, and welcome to Week in Review (WiR), TechCrunch’s newsletter that recaps the major tech industry happenings over the past week (or so). In this edition of WiR, we take a look at OpenAI CEO Sam Altman's unexpected firing, Humane's strange -- and perhaps overambitious -- Ai Pin, the shutdown of the popular video chat service Omegle, Airbnb acquiring the secret firm of a Siri co-founder, and Amazon launching a discounted health plan.