Unfortunately, dogged, single-minded cussedness is trait shared by many people, period.

Hmm. You think so? I know people can get vocal when a subject comes up, and they often pursue their p.o.v cussedly and sometime doggedly over the short term, but I think they usually drift off to pastures new when the novelty wears off.

Single-mindedness over the long term I have found to be a fairly rare commodity in general, but where it does present itself, there is usually something more than just cussedness behind it.