My Dad and I have faithfully used ropesaws to take down high limbs and branches on trees. Its basically a hunk of chainsaw chain with a rope on each end and a weight to keep the chain oriented vertically. They work amazingly well when sharp, and we use a bow and arrow to shoot a string up over high limbs, sometimes over 30' up.
After years of use, there was an incident recently. My brother-in-law and a neighbor were using the saw. They got impatient and escalated the brute-force approach. The rope snapped, and the saw came whipping down and nailed my brother-in-law in the face. Zorro would have been proud of this, very few places on his face or forehead were left unscathed and pretty good chunk out of the center of his nose with some mild bruising. Nothing permanent, but some profound temporary welting that we'll laugh about in the future. It looks like someone whipped him in the face a few times with a Roman horse whip

Anyway, stuff just happens. Just the usual reminder to wear those safety glasses and exercise some patience.