Abstract
It from bit or bit from it? These two point of views can not clearly judged only until we truly understand what is information, what's the essential physical definition of information. What is information? What is its relation to “Reality”? To understand all these, we can gain a lot from the history of energy. Energy is also a very subtle concept and we have spend hundreds or thousands of years to understand its physic origin. Finally, we understand that energy is kind of symmetry, is a consequence of the fact that the laws of physics do not change over time. We argue that the essential of information is also related to symmetry, actually its antithesis symmetry breaking. While symmetry is kind of redundancy which means loss of information, breaking of symmetry gives rise to information. In conclusion, \emph{B}it is from \emph{B}reaking symmetry of it.
WANG Xiong