Answer:
"Point out" and "point to" have substantially the same meaning, but, idiomatically, "point out" usually refers to a more abstract or complex object whereas "point to" refers to a more concrete one. For example, one would "point out" that the world is more complicated than it was one hundred years ago, but would "point to" a particular person in a group. However, there is no absolute rule, and either phrase could be used in either of these situations. In the first instance, however, it would be more idiomatic to "point to the fact that ...