I am always amused when I hear of a quantum leap being made in some field of human endeavour

Ah. Max, but but but -
Isn't "quantum" as it is (probably mis-)used now all about the discrete aspect rather than the smallest possible aspect?

i.e. a quantum leap represents when something or someone jumps from one discrete state to another, or makes a significant transition.

"Never mind the quality, feel the width" !


You're almost definitely correct about the extended meaning, though.