A note on "craft" here is that Heaviside's other thing was inventing a kind of magical math that seems like it shouldn't work (even though it did) and ignoring

A note on "craft" here is that Heaviside's other thing was inventing a kind of magical math that seems like it shouldn't work (even though it did) and ignoring everyone who complained about it. https://deadreckonings.com/2007/12/07/heavisides-operator-calculus/ https://deadreckonings.com/2007/12/07/heavisides-operator-ca... https://en.wikipedia.org/wiki/Operational_calculus https://en.wikipedia.org/wiki/Operational_calculus