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Are We in an AI Bubble?
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This is a most excellent place for technology news and articles.
The landmark paper that ushered in the current boom in generative AI (Attention is all you need (Vaswani et al 2017)) is less than a decade old (and attention itself as a mechanism is from 2014), so I'm not sure where you are getting the idea that the core idea is "decades" old. Unless you are taking the core idea to mean neural networks, or digital computing?