"facts" in a research sense are qualitative or quantitative:
qualitative: usually some kind of survey where people rate their experiences; it is a "fact" that i checked "always do that it" on a scale of 1-5 "1" means never and "5" means "always". my report of my behavior or feelings may be accurate or not, but it's a fact i checked the box.
quantitative: statistical measures, i.e., number of occurences. in 600 samples of air taken at 100 feet above sea level at random locations throughout X area, (define an area by latitude and longitude), each sample is tested for carbon dioxide content, or whatever. established tests are used to evaluate the numerical results. if a significant difference is found, that can be reported as having been found.
what these "facts" *mean* is conjecture. and the conclusions reached are only as good as 1) the quality, completeness, and accurateness of the "facts" at hand, 2) the integrity and ability of the person making the conjecture.
most good clinical research will be careful not to claim proof of fact, but support of claims (hypotheses).
so you can never eliminate the human element - error, finiteness, bias, and outright dishonesty. so what do you do? well, you look at this particular researcher, and you look at their history, and you look at their claims. how well do their claims fit the observed facts? are there any other theories that would also fit the observed facts? how has this person done making predictions based on research in the past?
the truth is bullshit can and has been passed for "truth" in the highest research circles. in fact, in the 1990's, a highly respected scientist deliberately wrote up and published a completely bogus article in a highly venerated publication specifically to show that because of who he was, noone would challenge his interpretation of fact. he then came out and told the scientific community what he'd done. it created quite a storm of controversy. the point was made that we all stand on the shoulders of giants, and that we have to be able to trust our colleague's work. but of course his point was that yeah, in an ideal world, maybe! so he fooled some of the best minds in the world! i guess i better be careful huh!
so there is this "peer review" process in research where any research that reaches a point of being published in an industry journal has at least been checked and accepted by the group of "peers" in the research community. that has advantages and disadvantages. it means there is some accountability, but it also means there is a lot of political control.
so what do i do about peak oil and politics? well, i take what i already know or think i know about science and history and so forth, and have observed about people and the Way Things Are, and i have hopefully done the work to be thoughtful and critical of my own information and assumptions along the way, and i check this new "fact" against what i already know, and i consider where the fact comes from and how it comes to me, and i ask myself: does this fit? and if it doesn't, i ask myself what else i need to know, or what i need to consider about my own beliefs that needs to change. and i try really, really hard to discipline my emotions, because they color the "facts" more than anything else i can think of.
Now, my emotions (and, i would add, my intuition) are IMPORTANT sources of information themselves, so i don't discount them, but i try not to let the horses drive the cart, and i try not to over-egotistically assume that my intuition is always correct.
so i have this big committee in my head. there is my memory bank. there is my deductive logic. there is my inductive logic. there is my scientific method. and there is my heart. there is my intuition. there are my spiritual beliefs and practicies. there are my values. there are my instinctive drives. and who knows who the hell else is in there! there are ll looking at the "facts" and trying to work out what is the closest reflection of reality. but you know ultimately we all have to take a leap of faith, which is to take our best assessment of the facts and go with it, knowing we may have to change our minds sooner or later, and knowing we will almost certainly adjust our assessment as More Is Revealed.
right now my best assessment of the facts is this:
1) there is an energy crisis coming and it's not going to go away.
2) the economy may or may not ebb and flow, but ultimately i see a long recession and maybe a depression ahead, sooner or later.
3) there is an ecological crisis coming also in the form of global warming which may put PO to shame.
4) i need to prepare for both.
5) i am not ready for either.
6) i tend to go straight to fight or flight, and that's a pattern obvious from my personal history, so it is very important that i have control of this impulse before i make any decisions.
7) take small steps every day to learn and prepare.

don't trust the media, don't watch the news on TV EVER, read read read.
9) question everyone's motives (that's part of critical evaluation of research too, not just paranoia).
now, i have no real clue who any of the experts on this board are. not because i haven't read their bios or seen their credentials, but because i'm not directly involved in what they do. i don't move in their circles and i don't have a common ground for their expertise.
i DO have an acquaintance with noam chomsky, who just joined the expert section. he is a heavyweight in a community i used to belong to, an academic community. i don't know if what he has to say is right, but i do know he is a very, very, very smart man, and i'm pretty sure he moves outside corporate circles - maybe, maybe not. i don't know who pays his rent these days. i do know i respect his work and have some of his books on political and cultural criticism at home. so no, i'm not going to take what anyone says at face value. i'm going to add it to my growing pile of information and see what patterns are shaking out and what i want to do with them.
and i'm going to listen to my gut. when i hear a lot of saber rattling, i know fear is involved. when i hear black-and-white thinking and generalizations, stereotyping, i know more fear is involved than thought. i know i have to avoid extremism in my own life. that doesn't mean i don't react promptly, it means i avoid extreme beliefs and i avoid IMPULSE. so anything that to me has the ring of reactivism, rather than activism, i will listen too pretty critically and handle pretty carefully. i try to look for the place where all the "facts" and claims and my own informatoin come together, my experience is that is as close to "truth" as i will ever get.