No true scientist will find it disappointing that science is not a "truth", in that anything in science can be absolute. However, when you say:
I find it interesting that all assumptions act (even if they are tentative) as fact (i.e. truth) or in other words, absolute fact!
The science theories are based on the facts we see around us. Fact, there is a huge variety of life on earth. Fact, this life changes. Theory--evolution explains these facts.
Fact, a more dense mass attracts less dense objects.
Theory--newtonian gravity explains why these facts are. However, theory of general relativity does a better job, and is current gravity theory. It soon may be string or M, but I'm no physicist, so ask them.
While the facts may not change (but some do, like the age of earth--it was once a fact that it was no more than 12000 yrs, now it is a fact that it's roughly 4.5 by old.), theories can and do.
These theories are also not assumptions--well, not the scientific ones at any rate.
ABE: I can't type. It should be "not a truth", not "a truth" in the first sentence.
Edited by kuresu, : I can't type
All a man's knowledge comes from his experiences