I'm sorry to say this, but I don't like the kind of hater-like comments here, who got so less to say about the reasons they are disappointed by this episode, that they have to copy their old comments or parts of the response IMDb gives if you are not able to write more than two sentences. If you got something more to say than "I think the writers are lost. I want the questions/secrets of the earlier episodes to be revealed." maybe people will vote your comments "useful". The reason David Lynch was forced to give the murderer of Laura Palmer, that networks didn't think people are patient enough to wait for more than few episodes until a mystery is revealed. In case of Twin Peaks, that destroyed the whole series. With LOST it is the same. If the secrets of the island would have been revealed in the third or fourth episode, the fun of it would be gone. I trust the writers and producers they put it in a big picture in the end. It's like a big puzzle. After a certain time you start to see, what the big picture will be.
I also think there are better episodes, but you can't put action or mystery in every episode. We get to know in this episode, that Jin is still alive (in different time), which was quite surprising(usually to LOST). The rest of the episode deals with the lawyer who asked the blood test of kate and Aaron, Jack and Kate meeting and following him, finding out that he is the lawyer of Claire's mother. But he is also Ben's lawyer too. The island time travellers meet themselves, seeing Aaron's birth and after a second time jump they are hunted on a boat, they found at their camp on the beach.
I also think there are better episodes, but you can't put action or mystery in every episode. We get to know in this episode, that Jin is still alive (in different time), which was quite surprising(usually to LOST). The rest of the episode deals with the lawyer who asked the blood test of kate and Aaron, Jack and Kate meeting and following him, finding out that he is the lawyer of Claire's mother. But he is also Ben's lawyer too. The island time travellers meet themselves, seeing Aaron's birth and after a second time jump they are hunted on a boat, they found at their camp on the beach.