How to drive a car is fundamentally different to the car. How to handle an equation is fundamentally different to the equation. The algorithmic steps required to handle an equation are fundamentally different to the equation.
The equations that represent the laws of nature do not represent a moving world: it is the physicist and the equations together that represent a moving world. The physicist makes up for the deficiencies in the symbolic equations, which despite the delta symbols merely represent static relationships: the physicist makes the equations move.
To extricate the physicist from the symbolic representation of the world, one needs to use Boolean and algorithmic symbols to represent what the physicist is doing: the physicist is discerning difference in the symbols in the equations, and the physicist is moving and changing the symbols in the equations.
The world is a differentiated system, differentiated into what we would represent by equations, variables and number symbols. It is logically necessary that a differentiated system must differentiate itself (i.e. discern difference in, what we would represent by, equations, variables and number symbols).
The world is a moving system. It is logically necessary that a moving system must move itself (i.e., what we would represent by, the assignment of new number symbols to variables).
The discerning of difference, and the assignment of numbers, can only be represented by Boolean and algorithmic symbols.