That's not as good as it first looks, it was well understood by the turn of 20th century that there was a strong correlation between smoking and disease, it too

That's not as good as it first looks, it was well understood by the turn of 20th century that there was a strong correlation between smoking and disease, it took the better part of a century to bring this to the fore. Imagine how prevalent a misconception could be if the disconnect is less clear. Science is a methodology nothing more. The problem is any appeal to human authority, it was quite easy to keep smoking and say "but the science says so...".