What is the essential conflict between general relativity and quantum mechanics? How have scientists treated the two separate schools of thought?

How does string theory mend the gap between general relativity and quantum mechanics? Why is this agreement vital to the survival of the theory?

What are the quantum forces and how do they affect the microscopic particles?

Scientists have predicted the existence of the graviton. What led them to the conclusion that a graviton must exist?

Explain the importance of experimentation in confirming a theory. Has experimentation been an option for string theory? Why or why not?

What is the importance of symmetry in quantum theory? In string theory?

What is the "infinity" problem? How was it solved? How is this relevant to quantum mechanics, general relativity, and string theory?

What is a black hole? Is it really "black"? Why are both quantum...