Miles Brundage retweeted a post from Matt Yglesias stating that public policy must address artificial intelligence risks more thoroughly. The post questions whether concerns about data centers or chip exports alone capture the needed discussion. In a separate post Gary Marcus replied yep to a link discussing AI lab CEOs. The linked discussion notes that leaders such as Altman and Amodei previously spoke openly about labor replacement and existential threats from AI. Observers in the thread observe that those leaders now place less emphasis on the same topics after their companies reached high valuations. Both posts appear in the visible conversation of visible replies on X.