We know that as technology improves simulators become more and more important for teams. We know that teams can use simulators to set up the car, drivers can get a general feel for a new track layout. The simulator becomes a training tool, one which I feel drivers themselves are using to perfect their craft.
Our senses are not perfect, our vision is often prone to illusions, the rest of our senses that we use to drive a car aren't perfect, a lot of the blanks are filled in by our brain based on our anticipation. Yet our senses are good enough to let us drive extremely fast cars with millimeter precision. Simulators in kind are not perfect simulations of reality, our brains are forced to fill in more blanks, the sense of proprioception has to be imagined by the driver to an extent, g-forces, grip levels have limited feedback compared to real life. However, given their limitations I feel that simulators are still good enough to help drivers improve.
There is a two way feedback, the driver driving the real car on track creates a baseline for the driver to compare to the virtual car. The driver learns the real car, and applies what he learns to the virtual car, which in turn(if the simulation is good) can teach the driver a few things about the real car because you can instantly try things with a simulator that you couldn't in real life. I think this phenomena is more pronounced with the latest generation of drivers that grew up playing sim games. That driving both virtual and real cars reinforce each other in a feedback loop, you learn the limitations of both, and since your brain can fill in the blanks of your partial senses, it stands to reason that your brain can also bridge the gap between simulation and reality if a driver practices enough.
I think this phenomena is a reason that the new breed of drivers has so much potential, their brains have been wired to understand both reality and simulation, after all both reality and simulation are after the same goal, to drive a car as fast as possible.