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#151
I think we're going to have to agree to disagree on this one, because as you said, the Drake equation only makes predictions based on what is known at the present time. The Drake equation theory can't possibly know what in the future, will be discovered that could change everything regarding our current limitations on space travel.
And, just for the record, no I don't believe in the Big Bang theory at all. A universe full of cosmic material didn't just "magically appear" out of the blue, at the exact point in time that the supposed Big Bang happened. All that cosmic material had to have come from somewhere, and it had to have been created beforehand for the Big Bang explosion to have happened --- so, to me, logically speaking, the Big Bang could not possibly have been the absolute start of the universe.
Also, I could be wrong about this, but I think that the Big Bang theory came into existence before the science world got a real grasp on the meaning and implications of the cause and effects of black holes. Had the Big Bang theorists had the information that we have now, the Big Bang theory itself might not have even taken hold as one of the major theories of the 'start' of the universe.