But nature wasn't trying to create intelligence. Intelligence emerged because intelligent creatures lived long enough to pro-create and spread their genes.

Yes, evolution is a powerful force, but there's no particular reason that I'm aware of to think that we, as human, without our own intelligence and reasoning abilities, can't engineer other intelligences.

"But nature wasn't trying to create intelligence"

That may seem true... but what if it was/is though?

That's the whole argument around theism.

I think if nothing else, as long as I can see it do the things(on it's own) what a human being can do to the point where human intellect and creativity is completely devalued, that would satisfy my definition of intelligence