Forgive my intrusion, but there seems some confusion as to the effect being an illusion, a matter of delusion.  There has been a profusion of comments with no real conclusion.  I assume there is no collusion and the effects were heard in seclusion, and so are worthy of inclusion in this debate.

We can discount nuclear fusion, but the answer is no foregone conclusion; and we want no-one's ego to suffer contusion.

So, unless I'm deluded, this discussion's concluded.