If there is an explanation, I would appreciate undersanding them 1. The speed of light being (approx) 300,000 kms/sec rather than some other value? 2. That the speed of light is the same no matter what frame of reference (as per Einstein's theories and I assume it must have) 3. What is energy (as opposed to what are it properties) 4. Since strings "vibrate", is there a base frequency to the universe that all others are made from. And branching into philosophy, is this why people like music? 5. And another philosophical or speculative question, can string theory/m theory start to explain our soul, what it is and other supernatural phenomena? Also if there is someone beyond this forum that may be interested in these questions could you let me know.