Tom,
You can't call someone stupid that has never been shown what is obvious to others. Most people learn through experience, observation, and lessons taught by others to them. For example, someone that grew up in the city, never dropped a tree in their life, never had a father or some sort of teacher show them how to drop trees safely, etc... it ain't obvious to them the facts of wind load and the intricacies involved in dropping a tree where you want it to go. They're going to learn by doing. I remember my father teaching me about wind load on buildings (he was an architect) and he told me quite adamantly, MOST FOLKS DON'T KNOW ABOUT WIND LOAD. Its just a fact. They aren't taught the subject.
Having never dropped trees in my first 48 years of life, I started heating our home with firewood about 4 years ago. Not having an experienced tree cutter to show me how to do it I was on my own. I've learned through experience and self teaching. I read a lot. I observe each tree fall and learn a bit more each time. Fortunately for me, I saw many tree cutting disasters over my life and knew to be careful. And I knew about wind load because of my father. I've had several not fall where I planned them to fall. I've had a couple barber chairs. I've had a couple hang ups. I had one unexplained gust of wind that took a tree 180 degrees opposite of where I planned to drop it. Did I know what I was doing when I started? Very little. Do I know what I'm doing 4 years later? For the most part, but I still take a lesson from each tree dropped as each one is a little different.
Stupid would be repeating mistakes. Inexperience does not mean stupid.