Physicists symbolically represent the world by equations, variables and number symbols. To make these symbols represent a moving system, physicists differentiate (discern difference in) the symbols, and physicists move and change the symbols. In other words, physicists are part of the system of representation. The equations, variables and number symbols alone do not represent a standalone moving system.
Human beings can never fully extract themselves from their symbols. However, to symbolically represent a stand-alone moving system, you need to include Boolean and algorithmic symbols to replace the physicist. I.e. you need to include Boolean and algorithmic symbols to represent the world differentiating itself (discerning difference in itself), and to represent the world moving itself, which includes, what we would represent as, the assignment of new numbers to the variables.
What we would represent as the assignment of new numbers to the variables is NOT what the law of nature relationships are doing: the symbols that represent the law of nature relationships merely represent passive relationships between categories.
Differentiating (discerning difference) corresponds to basic consciousness; assigning new numbers to the variables corresponds to basic agency.