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I just realised, another big factor here:

Innovations in transistor design help to shrink it on one dimension (e.g. the semiconductor size gap). This translates to a silicon wafer in two dimensions.

Therefore, for every factor (n) decrease we get in transistor length, we can fit (n^2) more transistors on a chip. Therefore we don't need (as) exponential amounts of innovation to get exponential outcomes.

Maybe I'm being crazy, Babbage you can correct me if this is way off :)




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