Most of us are rational and accept that science has presented the facts accurately. Yet there is a danger.
In the USA, our Food & Drug Administration has given us the Food Pyramid as a healthy scientific guideline for nutritious eating. They've told us to avoid fats and eat lots of carbohydrates. And they've killed millions with this advice.
When government sticks its nose into science, a bad odor emerges. In this case, the intention seems to have been to support certain commercial food producers (corporations with the ability to influence government decisions). As far as vaccines, nobody is profiting enough to buy congress.
Government decided some years ago that second-hand smoke was dangerous. They commissioned some studies to prove it. But when the studies came back without statistically valid evidence, the government simply redefined the term 'statistically valid' to fit their purpose. When it comes to sin- smoking, drinking, drugs ... the government isn't going to let facts intrude on their moral campaigns.
So science can be wonderful. It's essential for an honest evaluation of such things. But sometimes government trumps science. Here's where we have to be diligent.
Some day we will discover the drug that government dreams of: the brainwash pill. We will hear many lovely stories about how this drug will improve our lives, make us taller and studlier, make us happy and smarter .. We'll see many 'scientific' analyses to prove that it's true. And we'll all become drones, subject to the will of our overlords.
Beware the mix of government and science.