Is (any/all) knowledge a good thing?

From Adam's election to join Eve in a mid-morning snack to the new movie out in theatres entitled "The Golden Compass", the idea that knowledge is or is not a good thing has been tossed about, considered, with the result that it seems to be one of those questions that never gets addressed any more - as if the answer were so obvious that it needed no further consideration.

I challenge you, reader, to answer the question for yourself.

Can it even be generally, directly addressed? Is it early knowledge "of good and evil" that we should warn against or all early knowledge? Is it true that all information should be available to anyone? Is there a point of ethical concern or edification that all points of knowledge each have a threshold?

Or is the opposite something you hold true - that each genre of knowledge can be specifically addressed? That the earlier you know something, the better you can address whether the knowing of that thing is right for you? That the knowing of something itself, separate from acting or doing, should have no ethical consideration?

So what say you?

I challenge you reader, in particular, to consider:
... whether knowing something for its own sake is truly a goal worth achieving
... whether you would be comfortable with your own children learning anything with that same intellectual candor