atheism, philosophy and emotional immaturity

[Mystic]

Prove that it is a fallacy to say "My doctor told me cigarettes cause cancer so based only on this, it is likely that cigarettes cause cancer". Where does fallacious reasoning enter that?

But it's not simply based on that. And that is not the argument from authority. It's like how do we know China exists or the Holocaust happened. It's on a variety of factors. When you trust your Doctor, it has to do with your knowledge of what science has achieved. Science cures diseases and illness. Infections. It makes us fly over the ocean. It works. You know that. You know the system of education is advanced. You know Doctors have to be smart to be doctors and have studied and gone through rigorous training. More over you know of the peer review of the system they are in. You know how advanced we are now. But if you lived two thousand years ago, and a Doctor then told you something, it wouldn't have the significance of what you know a Doctor's authority is now.