Definition: Given the Question and Answer pair, detect whether the answer is acceptable or not. Denote acceptable answer as "yes", otherwise denote as "no". An acceptable answer is consistent with the context in question, detailed, long, and uses general knowledge of English. Answers that are not definite and suggest a variety of options are not acceptable answers.
Input: Question: I'm a little bit confused with the following phrase. I was reading an article about concurrency in Java and there was a sentence saying: It is worth noting that both unlockRead() and unlockWrite() calls notifyAll() rather than notify(). This phrase seemed quite strange to me. What does it mean? 
Answer: "It is worth noting that" simply means "here's something, which you should remember:" or "here's something you should pay attention to:" or "here's something that is worth reading and remembering:" It's that simple. Regarding (1), there is no connection at all to "apropos" or "besides..." Regarding (2), it always means exactly the same thing. It simply means "Here's an interesting point:" (There is utterly no connection in any way to "useless" or "costs nothing".) It is worth noting that, the ELL site exists for basic questions about the meanings of phrases.

yes