Bioshock Infinite

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Side note - how do they justify plasmids in the sky when their original use was to cope with the intense pressure in the depths of the ocean? I must have answers!

Oh so that was their purpose? Interesting, I didn't know that. Not sure if it makes a whole lot of sense either, since the air in Rapture surely didn't have the same pressure as the ocean surrounding it, considering the whole city was properly sealed off with thick glass and everything. I mean the pressure in a submarine is not that terribly high either, or is it?

Anyway, my guess is that in a City where morals are as loose as they are in Rapture or this new city (seems pretty dystopian too) and where money pretty much rules, any product that can give you an advantage over other people is automatically in high demand. So theres more than enough motivation for scientists to invent all sorts of weapons and plasmids and whatnot, because the wealthy people at the top are sure to pay for those.