NetDoc:
you chose to be a jerk about the whole deal. I have no idea why you chose to act in such a condescending manner, but when you do, you only give yourself and our board a bad name. The only real point that you have made is that you have zero patience and even fewer people skills.
I have plenty of both, but this question is beyond the pale.
NetDoc:
Give it a rest while you are still behind. There is no justifying your meanness
Meanness? Oh, I'm the big ole meany. If he's diving on basic knowledge this deficient, then I've done him a favor.
Those who tried to answer his question without judgment are harming him, because they are enabling him to avoid looking it up for himself and seeing what else he may have missed.
If he does the sensible thing, and goes back and reviews his OW text to figure this out and see what other basic items he missed or forgot (like never hold your breath), I may have contributed to saving his life.
NetDoc:
and you have NO RIGHT to demand that anyone give up anything unless you issued the cards.
I have the right to demand whatever I please. I'm not holding a gun to anyone's head. I can assert that their certs should be revoked. You, or anyone else, is welcome to rebut that assertion with a reasoned counterargument.
My claim that they should relinquish their certs is far more ethically legitimate than your claim that I don't have the right to make it.
I'll say it plainly, with nothig about personalities, and get back on topic - understanding the basic concepts of displacement and buoyancy, well enough to understand that a bag of water is neutrally buoyant in water, rather than significantly negatively buoyant, is a basic knowledge component for any level of dive certification, and acknowledged as such by all major agencies, and as such, anyone lacking it should not hold a valid diving certification.