In your brain, neurons are arranged in networks big and small. With every action, with every thought, the networks change: neurons are included or excluded, and the connections between them strengthen or fade.
Neural networks have become shockingly good at generating natural-sounding text, on almost any subject. If I were a student, I’d be thrilled—let a chatbot write that five-page paper on Hamlet’s indecision!—but if I were a teacher I’d have mixed feelings. On the one hand, the quality of student essays is about to go through the roof. On the other, what’s the point of asking anyone to write anything anymore?