[manasecret]

Originally Posted by Fyacin

I don't remember them explaining vita chambers?

Well, it depends on how much of an explanation you want. They explained how and why they were built in at least one or two diaries. They don't, however, explain how exactly they work, but I don't expect that for a science-fiction device.

For the explanation of how and why they were built, there is one diary by Dr. Suchong that you get very soon before you kill Andrew Ryan. Suchong explains that Andrew Ryan commissioned them somehow, through Suchong maybe but that's not clear because it sounds like even he didn't believe they could work. But he also explained that Ryan set them up to only work on Ryan's DNA. This explains the video game conceit of why the protagonist can come back alive at will but no enemies can, in this case, through the VitaChamber and because you're Ryan's son.

Something I didn't think about until now -- why can't Ryan come back to life then? Or does he?? Hmm....