I just think we are a couple of episodes away to start understanding the majority of what is going on, especially with what has just happened to Eureka... While they try to cure her I'm sure we'll learn more about the nature of what she is, and the nature of the world they live in...

Keep in mind that we aren't even half-way through the series, so they have to keep it a bit interesting by these vague comments... Though they irritate me too...