I = space + time.
I = spacetime
I am non-trivial, why are you?

This is a paradoxical argument which derives from the impossibility of answering the question "How many hairs does a man have to grow before he has a beard?" Since there is no specific number at which an unsightly clump of hairs becomes a beard, the argument is that no useful distinction can be made between a clean-shaven man and Santa Claus.
A "non-trivial investment" in a PoW-coin mining operation is
definitively such when it consistently renders unprofitable the execution of an assault on the coin therewith.
(There is not particular point where probability waves become a human; therefore, the "I" is an element of the hyperreal - a symbol that references other symbols (namely, those of a self-concept) yet not the real.) "Non-trivial," however, as "I" used it, indicates that the investment - whatever form it could assume - was of a nature that left imprudent an attempt upon the PoW of the PoW-coin therewith.