Microsoft’s release of a ChatGPT-powered Bing signifies a new era in search. Then, a disastrous preview of Bard — Google’s answer to ChatGPT — caused the company’s stocks to slide 7 percent. The A.I. arms race is on.Plus: What “Nothing, Forever,” the 24/7, A.I.-generated “Seinfeld” parody, says about bias in A.I.On today’s episode:Sam Altman is the chief executive of OpenAI.Kevin Scott is the chief technology officer of Microsoft.Additional reading:Microsoft integrated OpenAI's technology into its search engine and kicked off an A.I. arms race.Google released Bard, a rival chatbot to ChatGPT.“Nothing, Forever” was temporarily banned on Twitch.