Im 25% in and we still haven't touched upon what's new. I know what ECMA is, what iterators are, what the functions of an iterator could be (the explanation of

Im 25% in and we still haven't touched upon what's new. I know what ECMA is, what iterators are, what the functions of an iterator could be (the explanation of an iterator is vague anyway). What happened to just writing the answer to the title? Its a lot of fluff that didn't make me want to continue reading.