To Theists
Great posts thank you. This is what I think about the points.
I feel that there are different kinds of beliefs of different nature. To analyse how they are different, we can ask "Why" one believes X.
1. Why do you believe flying is unsafe? Because I have seen, and heard the horror stories and news, sometimes air accidents and disasters have happened in the past. If they happened in the real world, it could happen in the future too. I believe it is unsafe or it is not 100% safe to fly.
The belief is based on the inductive cases in the past. This type of belief is bound to change any time depending on the empirical evidence acquired by the believer.
2. Why do you believe in God?In this case, anything can be the reason. It is not limited to the inductive or deductive premises or experiences. It could be totally personal, psychological and existential and even irrational.
Because I just believe in God. Because I was brought up under a religious background. I don't know. I just know God exists. I have had unexplainable experience that God exists.
All these reasons are mostly psychological, and are out of boundary for rational explanation. No arguments can diminish or break this type of belief unless the believer changes his mind by his own internal thoughts based on psychological reasons.
3. In the case of Placebo, the believer is taking it on the basis that the pill will cure his symptoms just because it was given by a doctor. The belief is false, and as soon as he knows it is a placebo, his belief will crash to nothing. It has nothing to do with faith. It is not the case, that he doesn't know why he wants to take a placebo, but just taking it for some existential grounds, or he was brought up under the placebo taking traditional family or he just knows that placebo will cure his symptoms. If the placebo was given by a passer-by he met in the park, he won't necessarily believe that placebo will work for him. So placebo does not require faith. In fact it has nothing to do with faith. It is based on the placebo takers' false belief that it might work.