Torchwood - Children of Earth

[Tiberius]

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I think the way they wrote Jack out at the end made him look pathetic and painted a picture of a coward.

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Though I suppose they'll be able to rectify the problem and use the point as character building material if they decide to produce a forth series.

I think that given what he had done, and the kind of person he was (immortal), it was the only rational decision he could make other than taking the same course of action as Mr Frobisher did. Without giving anything of the plot away, I think it was a nice illustration of how the "sacrifice the few to save the many", whilst in most cases is the most rational choice, has its own consequences.