- September 2nd, 2014, 1:18 am
#213054
To me, considering what caused the big bang is a bigger problem than just thinking of it as being cyclical --- no beginning or end, always existed and always will. Because thinking of a first cause always leaves us with something coming from absolutely nothing, and that to me is harder to swallow than a cyclical and eternally existing Universe.
What helps me to swallow an eternal Universe is to understand that eternity is simply a property of time, which is a property of the Universe. If time exists as a property of the Universe, and it does, then that implies that it could have no beginning or end, simply because that is the nature of time. We like to imagine visualizing time as a line, either of finite or infinite length, but in reality it is more like a circle, again either of finite or infinite diameter (although we cannot imagine either an infinite line or circle). This means that no matter how far back you go in time, nor matter how far you go forward, you'll never reach any beginning point or ending point, not because you are on a line without end but because you're really travelling on a circle, although it is so big a circle that you cannot visualize it in your mind. This is the reason why it's hard to imagine a Universe with no beginning or end -- it's hard for us to cognize time the way it really is (circular and not linear). Once we learn to think of time as more like a circle than a line, no beginning or end will not be such a problem for us.
One interesting thing I thought about recently, and which helped me to see time as inherently circular, is to consider time before and after the Universe allegedly begins or ends. It does not exist. There was never a time when the Universe did not exist, and there never will be a time when it will not exist, because if the Universe doesn't exist, then time does not exist either. So how could the Universe have ever not really existed at all, or how could it someday not really exist at all, if there cannot be a time when it didn't or won't exist?
Another way of looking at it is to understand that every cause must have a effect (result), and that every effect (result) must have a cause. Or, every phenomenon must have a cause, be the result of something, and also must have an effect, must result in some kind of change, otherwise no phenomenon would be under consideration in the first place. So it makes no sense to say the Universe "began", because "beginning" implies some kind of cause, but there can be no cause before anything exists, and yet nothing can begin without a cause. Similarly, it makes no sense to say that the Universe will "end", because "ending" implies some kind of result, and absolute nothingness cannot really be a "result". A result implies something that actually exists, and "nothing" only exists conceptually. So if the Universe is really going to end, we must conclude that the end result of it all was nothing, i.e. there was no result. But there has to be some kind of real result because every cause must have an effect, i.e. a "result".
If you can wrap your head around either or those philosophical constructs, which basically show that the Universe cannot begin or end because time cannot begin or end (and time is an inherent part of the Universe), an eternal Universe will not be so abstract a concept....