Leap in logic? Maybe not. One requires precision while the other can be judged. I actually am better in that place where I can say..."how about a little of this?" "How about that?". Yes, I did take a bunch of chemistry at university...but I liked geology and psychology much better because they fit my personality better.
I'm thinking it's the same with dyeing and discharging.
Which is EXACTLY why I support other artists who are so good at dyeing. I buy their work.