Using scientific terminology, Homo sapiens is a bio-form that has a program on the basis of which it functions in space and time, just like all other bio-forms on planet Earth. In other words, a human is the same bio-robot as all other natural objects.
A human, first of all, is a natural object, an element of the unified natural system. Any animal or plant lives and functions within strict programs. And, our planet itself and other elements of the Solar system are not able to move in space arbitrarily, deviate from their orbits; meaning that they are objects, which are programmed from the beginning.
A human is subject to the same natural laws. Subtype program of Homo sapiens gets activated at the moment of birth of an individual. And, he begins to live strictly according to this program, even if he knows nothing about it. It is the same as it is with, for example, animals and plants, or planets of the Solar system: Earth does not “visit” the orbit of Mars, a fish is not able to arbitrarily begin to live and function like a horse, and an oak cannot stop being an oak and begin to exist like a palm tree.