Yeah, this isn’t the first time we’ve outsourced our thinking. The ubiquitous use of GPS comes to mind leading to lower abilities in the hippocampus.

It grows when a person trains to be a London cab driver (no GPS allowed). [0]

Yet abilities decline as GPS use is used. [1]

These aren’t huge studies either, but also fall under the larger, “use it or lose it,” umbrella.

[0] https://pubmed.ncbi.nlm.nih.gov/34914151/

[1] https://www.nature.com/articles/s41598-020-62877-0