A model is in practice mostly an approximation rather than a replica. Think of a water bottle that is about to fall off a table. You brain does not model the tr

A model is in practice mostly an approximation rather than a replica. Think of a water bottle that is about to fall off a table. You brain does not model the trajectory of 10^26 atoms it consists of, but it has some abstract representations of bottles and the way bottles propagate through space, approximately by Newton's laws. Not only does this suffice for catching the bottle before it falls, but the computational capacity of the brain and the resolution of our sensory organs and of light rays fwiw. are also way too limited for us to model the bottle entirely.