In its third public hearing yesterday, the committee investigating the January 6th Capitol insurrection detailed the pressure put on Mike Pence to overturn the 2020 election—as well as the continuing threat to American democracy posed by Donald Trump. Can artificial intelligence become sentient, and if it did, how would we know? And why internet shutdowns are a costly and ineffective way to stop students from cheating. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer