I'd start with a surprising pattern: average IQ scores rose roughly 3 points per decade through much of the 20th century, even as calculators, search engines, and GPS absorbed more mental work. I think that shows cognitive offloading is not inherently degenerative; it often frees working memory for higher-level reasoning. LLMs are the same story at larger scale. If people use them to check reasoning, generate counterarguments, and explore unfamiliar domains, baseline analytical ability can rise, not fall. The danger is misuse, not the tool itself.