First - this turned into a pretty good thread.
Explaining gravity, density, mass, fluid mechanics, and the effects of pressure differential, in layman's terms, is not an easy task. There are some smart people here taking respectable swings. Personally, if find that to be uplifting and reassuring. I checked this thread when it was 4 pages, and no one had yet bothered to try.
I'm supposed to be working, but I may jump into the fray with a few suggestions.
Before I do, I would like to point out the obvious: prior to the existence of a free global communication and information system, tards had little voice. Now they dominate online discourse unless you know which parts of the internet to avoid, and which parts are worth reading.
IOW -
@VulcanNervPinch made an assertion that is dead nuts. Not only is it wise, it is obvious and fully supportable.
@mahavishnunj appears to be a potato.