Originally posted by EcstremeVenom
how is this testable? i dont understand how one could test this theory. it is in textbooks because it is scientific theory but creationism is not scientific theory and can not be tested either. what is it about the big bang theory that is testable?
The Big Bang Theory can be, has been and is being tested. Essentially, if you look at the universe, and its current behavior, you can make a guess or hypothesis about what it used to be like in the past. For example, we know it is expanding, so we make a hypothesis that it used to be smaller than it is now. Another very important factor is that the further away galaxies are from us, the longer it takes the light to get to us and therefore the older the galaxies we see actually are. In other words, we can actually look at galaxies that are billions of years old.
Now once a hypothesis is made about the big bang, you then do calculations to predict the various results one would expect including what ratio of particles would result, what sort of radiation would be emitted what the distribution of galaxies would be like etc etc. Then you check whether reality matches your predictions.
Creationism can be tested to a certain degree. For example creationists claim:
1. The earth is not nearly as old as scientist claim.
2. There was a world wide flood.
3. God does not intentionally deceive.
Now without 3, it would be impossible to tell the difference between the Big bang theory and a version of creationism where God made the world in such a way as to fool us into thinking the Big bang happened. In fact, in this version of creationism, we do not know whether or not God made the world last month.
However, I am yet to meet a creationist who will admit to God being that deceptive, so they must somehow claim that the enormous amount of evidence for an old earth must be wrong, and they must provide evidence for their claims. They have done remarkably badly on both fronts often resorting to manufacturing evidence or relying on attempts to shed doubt on the Big bang theory without actually providing reasoning to back it up.
My favorite argument against creationism, is that if the universe is a mere 6000 years old then 90% of the stars you see in the sky with your eye and over 99.999% of the stars that can be seen with a telescope, simply do not exist because the light that is reaching us has been traveling for more than 6000 years. Also, we would have to rewrite almost 50% of all science subjects as being totally and utterly wrong.