No, this stuff is irrelevant. There isn't a natural progression. Pittman shorthand, for instance, was a pretty useful system that only enthusiasts use these da

No, this stuff is irrelevant. There isn't a natural progression. Pittman shorthand, for instance, was a pretty useful system that only enthusiasts use these days. The most trivial change that axed this was purely social: men learned how to type. Similarly, business is being done in different ways that will make other old useful tools less applicable. The march to the grave starts at the crib, sorry about that.