Artificial intelligence could one day supercharge human cognition, leading to significant advances in science, technology and other fields. It could also make us dull, new academic research suggests. That's because the so-called large language models that power AI apps often yield information that is predictable and normative for the population as a whole, reducing life's complexity to a bland mulch of watered-down ideas. "LLMs predict the most likely next word in a sentence or event in a