I strongly disagree.
A truly open mind is a sewer, or a garbage pit. It contains anything that anybody chose to throw in it, for reasons good or ill, with no effort to assess the content. An open mind is a lazy mind.
Your post is internally contradictory. Read it carefully.
That doesn't mean a lack of discernment, it means a lack of bias.
A scientist (which is what we are when it comes to learning) doesn't accept everything he sees as true (and thereby fill his head with "garbage") it means that he doesn't automatically dismiss it as false until he sees the evidence.
You are suggesting a dismissal of information as false before you even look at the evidence.
Stupid comment. A closed mind is a lazy mind because it refuses to do any work...it just discards new information that is at odds with its bias.
You are confusing an "open mind" with a mind that doesn't evaluate new information. I would agree with you that if an open mind doesn't evaluate new information, it is going to get filled with garbage. And that's just about as bad as a closed mind with no information.
I just reread it carefully several times. I cannot find the internal contradiction you speak of.
Can you be more specific?