A few things people don't know but accept by faith:
how God came to be
what God is
how God forgives
what lies beyond the reached of our universe
how God created all things - even things we don't know about yet
how can all of the earth save for one family be guilty enough to drown in a flood (even babies that were just being born - as it's a good assumptions that this was happening without the bible specifying)
why animals need to suffer for what people did and be drowned in the flood
The list can continue but this one is what I want to discuss:
Why did God not want Adam and Eve to eat from the knowledge of good and evil?
Christians say God doesn't want robots, but when Adam and Eve ate from the tree, they weren't acting like robots, but pure individuals. Yet, they (the story goes) condemned mankind for wanting to know the knowledge the tree held.
People could counter by saying they simple wanted to disobey God - they would have eaten from any tree - but because the bible points to this particular tree and its title or name, I don't believe it was simple rebellion.
God doesn't seem to want us to know more as outlined by this story of the tree, but he does want faith. So it seems, at least in part, God doesn't want us to know certain things and rely almost strictly on faith in him.
If that doesn't sound like robots.....

So what did that tree hold, exactly, that God didn't want them to know?