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The next link (anti-smoking laws) was much better and more supportive of your side of the debate.
It made a claim that cases of cancer in men dropped after bans caused men to stop smoking. They did not say how they knew how many men stopped smoking due to the anti-smoking ban in public places. We must take their word for that on faith.
We do not know if any other changes took place during that time span, did they also effect laws to reduce auto polution? Did people become more health consious during that time span and started to eat more healthy foods?
Also was the study conducted for the whole population or just with people who signed up to become the study group used. As that could make a difference in the outcome of the study.
Without all the other data not included in the study it would be subject to potental "random errors".
As the study concentrated on just one area and overlook other reasons why cancer might have dropped.
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You will find it very hard to find any studies on the internet that have the entire method published.
They tend to only publish the results. We have to take all studies on faith that the scientists are doing their job properly. However - repition is the key. When several different scientists, with several different strengths and weaknesses, all get the same results. That is when we have faith in their results. That is common sense.
Critisise each singular study all you like - put them all together and they paint a very clear picture.
Now that I've posted some proof, I'd like you to post any study - with the method or without - that shows results of smoking being harmless.
2nd. The Finnish Institute of Occupational Heath seems to be qualified enough. Im sure they have qualifed scientists undertaking the studies.
They would be smart enough to investigate other sources of lung cancer.
3rd. Random errors are irrevelent when your surveying an entire population. Yes, it is the entire population. Amount of cigarettes being smoked can be monitered by Cigarette sales; and Lung Cancer instances can be monitered as they are recorded in hospitales. This isn't just a survey.
4th. Yes, it is just an area, but the point of my post is that they get the same results everywhere. If you read it you would notice that I highlighted the fact that all of my sources are from different corners of the globe.