i didn't say it cannot be, i said there's a natural reason it's not: the same reason the rest of analysis isn't. > You're right on one count: no library implem

i didn't say it cannot be, i said there's a natural reason it's not: the same reason the rest of analysis isn't. > You're right on one count: no library implements forward mode there are plenty of CFD type libraries that implement forward mode. they also do not use what i'm calling "magical" dual numbers i.e. these nilpotent ring elements.