The episode started and I couldn't understand anything. They were going to fast and it was all confusing. They kept on taking everything for granted...leaving the audience in a maze.
Two things worthy of this episode: Lexie stealing everything. I don't condome stealing, but in this case Lexie's situation was tender and funny. Then, the fact that Meredith decided to take on therapy was great, and a sign of wanting a change.
The rest... ouch.
I don't condome experiments on humans! Patients in this episode were like lab rats, one being given any test existing on the planet, for what? A couple of points? Is that more important than a patient's welfare? Then you have the other case, in wich Mer says "tumor!" as if she had won the lottery.
We are all animals, but in this episode they forgot about the humanity. Our interests should not harm the rest; this episode teached us the exact opposite.