Bioshock Infinite

[Ghieri]

You mentioned the city being sealed, thus preventing any effects of the
depth of the city, but very early in the game the plane from the intro
breaks through a tunnel in the city. If the plasmid didn't affect the
player like I mentioned, wouldn't he just spontaneously implode as soon
as that happened?

Now that I think about it, that crash should have instantly taken the whole corridor with it. The bottom of the ocean is INSANELY pressurized. It's a wonder anything can survive down there.

Leads me to wonder how they actually built Rapture in the first place.

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!

Story spoiler, to be safe:

Spoiler below!

I'm pretty sure that adam was used for both medical and cosmetic purposes, then Fontaine came in and started his war with Ryan, with plasmids introduced by Fontaine Futuristics to assist with his war.(Also to make money)

Don't ask me how I remember that(Last played 2 years ago), but can't remember what I had for breakfast this morning.