Question: In Baal HaSulam’s writings we see the concepts “our world” and “this world.” What is the difference between them?
Answer: Our world is what we as if feel in our qualities. This world is how Kabbalists speak about the lower degree, which at the same time is called “our world.”
It all depends on the observer. If we observe what is happening around us, we call it “our world.” If Kabbalah speaks about this as the lowest degree of the worlds, then calls it “this world.”
From KabTV’s “Fundamentals of Kabbalah,” 10/6/19