And - IMO a tool to play with the imagination. It can stretch our thinking. But imagination and thinking does not equal reality (what occurs in the measurable world).
Often, philosophy can be self-focused with questions (If a tree falls in a forest, does it make a sound?). As though the vibrations reaching the human ear is the only measure of its existence. As though our perception determines “all there is”. It may, for us, and we may imagine that beyond “us” BUT the accuracy or “as close to what is true” does not lie in our entertaining thoughts.
Hallucinating when deprived of food or water (lost in the forest) may temporarily provide an escape for physical discomfort, but does not stop the bodily process of dying.
Or opened the door to germ theory. Angels are germs and viruses 
(lol - good and bad).