Should we be alarmed by the web of complexity surrounding A.I. companies? On a recent episode of “The Ezra Klein Show,” Joe Weisenthal explains some of the potential risks. Nvidia, OpenAI and other major A.I. companies all invest in one another. This interconnectedness carries some risks, as Bloomberg’s Joe Weisenthal explains: “The fear would be that these are not sustainable revenues and therefore not sustainable profits,” he says on “The Ezra Klein Show.” #ezrakleinshow #nytopinion

Why is it so difficult to understand the impact of your charitable giving? Elie Hassenfeld faced the same frustration. He talks about the unlikely journey from working at a hedge fund to starting the nonprofit GiveWell on this episode of “The Ezra Klein Show.” #ezrakleinshow #nytopinion

How do you know the impact that your charitable donations are making? And how do you know if nonprofits are using funds in the most effective ways? “This lightbulb went off that almost no one was asking these questions,” says GiveWell’s chief executive, Elie Hassenfeld. Elie talked to @nytopinion columnist Ezra Klein about the organization’s mission to provide a more rigorous, transparent and accountable approach to charitable giving. #ezrakleinshow #nytopinion