Quote:
Originally Posted by hellaflush
One thing regarding M theory though... if it is the true explanation... it just then further pushes the main question away... "How did our universe begin?" now turns into "How did all of the Inter-dimensional universes begin?"
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G'Day Adam;
Nice to meet you.
As I understand it, M-theory historically united the five different competing String Theories by demonstrating that they were all just different perspectives based on the same principles. This was accomplished by increasing the numbers of possible dimensions by one and introducing the concept of 'membranes' which can have multiple dimensions, although the membranes are an optional way to think about things in the M-Theory world.
There is no need to search for the 'true explanations' in all of this.
Most 'theories' are based on 'best fit' with observable phenomena (when compared with other theories), although the concepts we hear about are derived from quantum level theory, described in mathematical language. Mainstream theories usually explain the available evidence and make some observable, and not-yet-observable predictions (due to technology limitations).
String, Superstring and M-theory however, have issues as to whether they can ever be falsified or not, and therefore there is debate as to whether they are scientific theories or philosophies.
There doesn't have to be any 'truth' in any of this … even though that is very often, the way it is presented.
Some theorists work on extending thinking before the Big Bang but these ideas are still highly speculative.
No one can be 'right' when giving answers to your questions.
I'm afraid we simply have to live with not knowing the answers.
This is my best shot at answering a tricky question (I'm no expert) … good to keep thinking about it .. always good to ask good questions.
Cheers & Rgds
