I agree. Imagination is far more powerful than I think the average human animal suspects.
That hit me while I was writing the first part of my autobiography several years ago. What I was writing was so "out there" you got a contact high just reading the material. (It's far richer than anything presented in this thread, for example.) For my own mental stability I had to treat the material at "arms length" and wrote from my decades old meticulous notebooks... often verbatim. What I was somewhat bemused by was how, at the very least, this was all the product of some pretty artistic mental footwork. I deeply appreciated that it could indeed just be all a product of my imagination. Days later, I was having dinner when it hit me, "But what if I'm right? What if this isn't my imagination?"
I guess my point is that it is incredibly enticing to get carried away with your own thinking, especially when you have rather profound experiences that defy description on which that thinking is based. The thing to remember is that the map is NEVER the territory. This should be repeated on a daily basis lest we let our imaginations carry us into the land of make-believe.