a series of ideas and general principles which seek to explain some aspect of the world that has the attribute administrative (relating to the management of an organisation)
Yes, so far it is- string theory explains many of the unresolved fundamental problems of our century, such as the opposition between Quantum Mechanics and Einstein's theory of general relativity.
Particle theory is a theory because it is someone's idea. Theory means "An assumption based on limited information or knowledge". So, the partcile theory is a theory because it is someone's idea on...