i have 2 views on this:
a) roswell was intended to bring about awareness of extra terrestrials to the american public. it was snatched up by government officials, and the good idea turned into a bad deal with the wrong kind of aliens(not the ones who 'crashed').
b) roswell was intended to bring about the 'negative' deals and treaties (or should i say treasons) between one alien faction (negs) and the US government (which would also be considered negs in my eyes).
hence it was staged either way, that much i knew.
but the details are blurry, of course.
either positive aliens wanted to show themselves in the most cotnrolled scenario possible (so as to not induce fear and chaos) -- or negative aliens planned the crash to later setup deals with our government.
also it is possible that positive aliens faked the crash in hopes of spreading awareness, yet the government completely screwed up their plans. therefore the positives abandoned the mission, BUT negatives saw this as the perfect oppurtunity to cut deals with humans by decieving them.
the only thing i see wrong with above statement is that the positives would probably have known whether or not their plan would work. they are geniuses, when compared to us.
have a nice day.