If this is something really truly important that we must all make life altering decisions, then why is it such a closely guarded secret?
Yes, democracy requires an informed electorate. You have been deliberately and expertly misinformed, there was no "secret".
Hasn't the pro side already "denied" global warming enough to rename it "climate change"?
Actually the only evidence that anyone did any renaming comes from a memo from Frank Luntz to GW Bush (Page 142, point 1), the two terms have different meanings and scientists had been using them for decades before Luntz deliberately conflated them.
What does "deniers" mean?
The memo also serves as a great example of what it means to be a denier, ie: denying reality for fun and profit.
Furthermore, you don't need to know all the details about how things came into being to practice science
Good point. Feynman called the fundamental forces the "lowest layer of the onion", a point where our explanatory power stops and you are forced to accept that something exists without an explanation. I like to call these things "miracles". Perhaps we will explain these miracles one day and replace them with an even more fundamental set of miracles. Thing is, believing in the miracle of gravity does not require blind faith, nor does it require you to know how it came into being. I think consciousness is in the same category and the best "explanation" comes from Sagan (paraphrase): "Life is how the universe observes itself".
Because guessing is a wonderful way to a full understanding of any situation.
He's in good company, Feynman taught his students that guessing was the first step in the scientific method, besides where else can you start?
Since when did Slashdot become horribly biased in supporting Israel?
The slashdot summary is factual, it doesn't give an opinion on the accuracy or merits of the reenactment. In other words the summary is written as NEWS should be written, the fact it is reporting on IDF propaganda in no way makes it a tool of the IDF.
Can we have a counter channel with a play-by-play according to the other sides?
Sure, but why would you want to match bad taste with more bad taste?
Any sufficiently advanced technology is indistinguishable from a rigged demo.