Many years ago when I was young, thin and single...a young man that I dated for a while was able to take down a tree without using a crane or other heavy equipment. He would climb the tree and make very specific cuts and would drop the tree somewhat like a Jacob's Ladder toy with the bark and cadmium layers still connected. I don't know the correct terminology for this method of felling a tree.
Hope you appreciate this YouTube video which proves that it is not how professional a person may appear, but their ability that is important.
https://www.youtube.com/watch?...