Sorry but "Most scientific views boil down to "belief"" is patently untrue. All scientific theories are not beliefs but rational explanations that fit the facts. If a new fact appears that contravenes the theory, the theory is thrown out. (see http://en.wikipedia.org/wiki/Aether_theories for example, some of which weren't thrown out till early last century).
As a physics undergrad I was never asked to take an expert at his word. Everything we learnt we tested in the lab, sure I didn't built an electron scanning microscope, but I used one and it fitted with the science.
The science I was presented with was given as a derivation of science I already knew, which was based on things we learn in high school etc etc. There is no taking the word of someone in science, hence the peer review process.
Unfortunately, I don't have the time to write at length this morning and by the time I get off work this discussion will basically be dead. So, in brief: Physics is very different from medicine. If you drop an apple to test gravity (per second per second measures, etc), the apple does not make a zillion and one choices that impact how it falls. But when you try to figure out what does and does not impact human health, people do make a zillion and one choices which impact the study outcome. There is also quite a lot of evidence that most studies concerning human health have serious flaws. Last, I would say that "peer review" is a form of social proof. Given how poorly that point is going over in this discussion, I will skip attempting to elaborate.
Physics and medicine both rely on rationalism and the scientific method.
The difference between what you are talking about and what I am talking about it the difference between objective and subjective proof. Your social proof easily falls into the post hoc fallacy[1]. While I will happily admit medical science doesn't get it right all the time at least the onus is there to prove the safety and efficacy of the drug.
A great example of this is those power balance bracelets[2], where anecdotal evidence (your "social proof") is provided in the form of celebrity endorsement. So a piece of rubber and a hologram like those you see on credit cards is sold for $30. They've been force to admit there is no evidence they work yet people will swear blue murder they do. Why? Because we are subjective beings, right now to our physical makeup (try plunging a hand into luke warm water then hot water then back again sometime).
We are poor judges of things, especially when it comes to ourselves.
It is not possible to completely remove social machinations (and other human shortcomings) from any human endeavor, not even the scientific method. Currently, science dismisses the idea that vaccines play any role in autism while not really having a solid explanation for what supposedly does cause it. I am always enormously skeptical of any claims that "we are absolutely certain X is not it and not even a factor though we have no clue whatsoever what is going on". To me, that smacks of social bias of the worst kind.
Let's just say I have less faith in the objectivity of the scientific community than you have and an alternate method for judging what looked like sound advice has, so far, gotten me better results than anything condoned by conventional medicine ever did. Should it fail me, I will reconsider my options. My judgment of these things is rooted in a 10 year track record of steady forward progress against supposedly impossible odds, not celebrity endorsements of things you and I apparently would both agree are hooey.
It is easy to class out what could have an effect when it is something easily as monitored and controlled like vaccinations. Changes in vaccination rates have had no influence over autism diagnosis rates. So while common sense tells you therefore the two aren't linked due to the lack of correlation there have also been comprehensive statistical studies to back the hypothesis that there is no link.
Why we don't have a solid answer to a cause of autism is because it is likely to be a combination of factors, both genetic and environmental (and likely not a single combination of those). There are plenty of other modern environmental factors that are suspects and but the alt-medicine lobby seems to be leveraging this disproven hypothesis for they own ends. Alt-medicine is big business, for example I know a couple of people making "fuck you" money doing it.
I agree that the human element is always a factor in studies which is why scientists go to great lengths to remove them such as double blind studies for example where both the tester and subject don't know which group the subject belongs to (test or control).
As a physics undergrad I was never asked to take an expert at his word. Everything we learnt we tested in the lab, sure I didn't built an electron scanning microscope, but I used one and it fitted with the science.
The science I was presented with was given as a derivation of science I already knew, which was based on things we learn in high school etc etc. There is no taking the word of someone in science, hence the peer review process.