Caution is defined as “care taken to avoid danger or mistakes”
Fear is defined as “an unpleasant emotion caused by the belief that someone or something is dangerous and likely to cause pain or an imminent threat”
I’m not fearful of death, but I am cautious of doing things which might cause death. My caution is exercised out of knowledge of a particular subject and by gathering the most information possible. I look both ways before I cross a busy street while I’m on foot. Once upon a time when I was in the fourth grade, I crossed a street without looking and got hit by a car. I wasn’t afraid before I crossed, but really scared after I got hit. Now I’m cautious when I cross streets. That caution came from experience….unfortunately in that case.
Ignorance is “lack of knowledge or information”
Stupidity is “behavior that shows a lack of good sense or judgement”
I have often done things out of ignorance to the situation, and sometimes have been stupid in my behavior. I knew at the time when I was doing something stupid, that I was doing something stupid. I once stopped by a beer joint with one of my friends and we bought three beers a piece. He drank his three while he was driving and ran his car off the road into a ditch. That was stupid and he knew it, but he did it anyway.
I have done things out of sheer ignorance that later on made me incredulous at my actions, when I realized my lack of knowledge on the subject, or my lack of information. I found it’s best not to act on any subject before you have as much information as possible, or before you gain the knowledge of the subject you are trying to act on. In other words, it’s best not to try and bullshit your way through a conversation about something with an expert in the subject. Your ignorance will show.
Being cautious is much different than being in fear, and being ignorant is not nearly the same as being stupid. Too often these terms are used interchangeably and therefore are often taken as being the same.