The Impact of Generative AI on Critical Thinking: Self-Reported Reductions in Cognitive Effort and Confidence Effects From a Survey of Knowledge Workers
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Agriculture also shrunk our brains
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There are studies about how other tools reduced various capacities. Our memory capacity has decreased and how we use it has changed. People used to store a lot of information, now we only store a sort of index (we remember where to look it up, not the information itself). Our attention span has also greatly decreased with the shift to short form content.
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It did! But we also ended up being more efficient per grey-matter mass.
FTA
This reduction in brain size however does not mean that modern humans are less intelligent. Human brains have evolved to work more efficiently and utilize less energy.
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Something something all you have is a hammer
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Americans: Hold my beer.
