Never ceases to amaze me, the amateur arborists' degree of intellect.
Or, lack thereof. LOL
What is cool is to watch videos of the guys who are good at it (granted they probably don't show their mistakes). When I moved up to the PNW I somehow ended up watching videos of some arborists up here chunking down 130ft+ tall fir trees here. Crazy to watch them be up there in just spurs and drop these things with almost pinpoint precision.