generation gap happening here. common core wasn't a thing for a lot of us, it's brand new.
i do math the "common core" way not because it was taught to me but because the old methods didn't work and i had to figure it out on my own.
it may not be strictly "an adhd thing" but society made it so for a time.
even as a kid i recognized HP as slop and it feels vindicating that society is finally catching up