Oceans,
I agree. At some point the mis-mash of combinations, the various uses possible and even personalities all combine to breath a synergy into an idea that makes it more than a re-hash, but a new and distinct entity. Part of the beauty of creativity.
Hell, what I have just described breaks down the act of writing a novel very well!
Lately, my internal musings catch me pondering the my last few decades professionally. I suppose the passing of Bruce Smith, friend and mentor, prompted the introspection. Honoring Aristotle and making mine a life worth living, brought about the reintroduction of the question and my thoughts as to it's answer.
Arboriculture is a living breathing thing, not just a job, not just people working. We each in our own way, bring something to the mix. Sometimes this is good, some times not so much!
I know for me climbing has never been an end in and of itself. I climb trees because there is work to do up there. I don't work in trees because I happen to be climbing them. I know this is just my perspective and others' differ. However, for me the best climber in the world is unless unless she or he posses the knowledge and skill to perform the job of Arboriculture safely and efficiently. In this, the spelunkers I have know are the same. They climb to access the object of their passions, discovery, a world so close, but so very remote.
It is this "drive" that we share and makes the physical way we approach our individual tasks similar.
I used to climb trees because I figured chicks dig it. I was mistaken, at least in my experience!

. I needed to get far from tree work to find a partner that would put up with me!
Tony