Middle Earth as a Parallel Universe

[Encaitare]

Yet another thought-provoking revival by Heren! I'm no physicist (I opted to take forensics and astronomy rather than physics like nearly everyone else ) so I'm not going to try and make any sort of brilliant hypothesis. Just one thing I'd like to propose:

Gwaihir offered the quotation,

I think, therefore I am.

And so I suggest: If I think and therefore I am, am I just a thought?