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No! This meme is just wrong (and it does grind my gears to an unreasonable amount as a physicist). In physics quantum means discrete, it does not mean small. Hence the idiom "quantum leap" used as "a discontinuous abrupt jump in quality" is perfectly in sync with the way physicists use the phrase.

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I'm not saying it means small, just that quantum leaps are nanoscale. And also, the state after the leap isn't better or worse than the state before, just different.

I still disagree. Quantum does not imply nanoscale - we are building bigger and bigger systems that exhibit inherently quantum behavior (for instance superconducting cavities used in quantum computing research are centimeter scale). Moreover, the jump is not necessarily in a spatial variable - it can be a very big jump in energy levels for instance, which is the case with laser emissions.

Sure, a (big or small) discrete jump does not necessarily imply a jump to something better, but that has little to do with my complaint about the meme that "quantum implies small".

I stand corrected. Thank you.

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