I'm reminded of the controversy in philosophical circles, some decades ago, as to whether or not things had any existence outside our observation of them. In other words, if there was no-one to see it, would it still exist? (Also referred to as the "tree in the forest" argument - if a tree falls in the forest, and there's no-one to witness it, does it make any noise?) Yes, I know, many philosophers are daft, but there you have it...
Anyway, this controversy spawned a limerick, printed in a British newspaper, that read:
There once was a man who said "God
Must find it exceedingly odd
To think that this tree
Continues to be
When there's no-one about in the quad."
(A "quad" means "quadrangle", a name often given to an open space between school or university buildings in England.)
It didn't take long for some wit to reply (in verse, of course), in the same newspaper:
"Dear Sir, your astonishment's odd:
I am
always about in the quad.
And that's why this tree
Will continue to be
Since observed by, yours faithfully, God."