There is no such thing as an infinitly small distance.
At the atomic level, there is still the law of quantum uncertainty.
So there is at a certain point no senseful determination of a smaller distance.

So there is a limited amount of steps to reach the goal, and not
an infinit.

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We can state that the worl we see is real:

-> the world is so complex, we can interact with it, and the
reactions are even more complex.
Simulating such a complex world would be almost imposible.
And even if: there is no economical reason for someone to
make such a complex simulation, just to observe our primitive (for them) reactions.

Would be cool though to be able to change the simulation.
I would assign me free money, and pretty girls and a big boat.
And call me: "Big Daddy", or "Luder Horst".