Normally people at least end the sentance before contradicting themselves...
1) The sentence is out of context as you've quoted it here.
2) I see no obvious contradiction; it depends on what the writer meant by the second use of the word "knowledge." If he/she didn't mean knowledge pertaining to what "good" and what is "bad" then there is no contradiction. I would say he/she probably meant something more on the lines of innate knowledge not pertaining to good and bad directly, but used to determine what is right and wrong through
experience. No contradiction.
3) Even if the writer did mean knowledge of right and wrong by the second term (which I see no reason to believe such), he/she is human, and a small error such as "entirely" is just nitpicking on your part.
One error I see them making in some of their articles is leaving a bit too much room for misinterpretation, either that or they expect all of their readers to be
highly intelligent (which doesn't seem so far-fetched).
Edit:
Haha, I just read the article. It is serious, and by no means satirical humor or drivel. But I can see how horribly you probably missed the entire article, just by your one comment. The problem with that one sentence was taking out of context mostly, and probably misinterpretation while it was in context.
It said ...
To Reign in Hell said:
Our knowledge of good and bad is entirely dependent on experience, although we come pre-programmed with some knowledge. Snakes are for the most part bad, in our genetic heritage, and depending on where our families originated, there may be other primal fears and primal desires. Germans seem to like order and cleanliness over all else, where to an Italian, a warm house full of good food takes precedence. What we all share that is not learned is a knowledge that some things will end well, and others will not. If we are attuned to ourselves, we become uneasy deep in our gut when we are part of a course of action that we suspect will not end well.
This is saying all knowledge of good and bad is
entirely dependent on experience, but not just personal experience. Rather, innate experience handed down through many generations of experience. I've studied this in a gifted class, how we have dreams pertaining to "primal fears" of things such we have likely never experienced personally in any way. Some examples of innate knowledge of "bad" would be: tendancies in potentially dangerous situations (such as being startled by loud noises, or the like), and innate fears of certain creatures and objects (such as snakes - as noted in the article, especially those that are brightly colored). And some examples of innate knowledge of "good" would be: tendancies to do certain things that innate knowledge says are "good" (as it gave examples of Germans and Italians.) The article words it better than me though, packing alot more than I over-simplified into that one paragraph.