Is it true that the moon does not exist if nobody is looking at it? I only see the surface of the same side when I look at the moon, what are you guys looking at? I might as well ask if what's below the surface of the Earth actually exists because I don't look at it. Does my brain exist, heart, lungs, bones, etc? I've never witnessed a thought, even a philosophical one. For all these things I just mentioned, I see no better than the blind, who always seem to be omitted from this type of discussion. It's as if believing something doesn't exist because it can't be observed requires some faith....now there's a switch.
Let's just call the moon a cosmological constant.