Positive
Part is better than none, though not as good as all.
"For now we see through a glass (or in a mirror made of bronze and therefore not a really good mirror), darkly; but then face to face: now I know in part; but then I shall know even as I am known." (That would be St. Paul)
Negative:
Do you think anybody truly knows the nature of matter?
Just yesterday somewhere or other I was reading a physicist who said NOBODY understands Quantum Theory.
Not really, I've just always wondered about why people believe things that so obviously cannot ever be known, or at least are not known at this time, to anyone. Thanks.