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Marketing sure painted themselves into a corner on this one by counting backwards, they only have one generation left before things get weird. Will they use fractions or go negative?

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Aren't there units smaller than nm?

Yep, and they used to be measured in microns. e.g. the Z80 used the 4 μm process node https://wikipedia.org/wiki/Zilog_Z80 1000nm = 1μm

Next smallest is picometers, 1000pm = 1nm

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