What you measure in your example is volume.
You are not measuring weight, nor mass, nor fat content.
Sure it does. Look it up.
Your idiocy?
DU?
MoveON?
Any other science gurus want to defend tpanther and metmom?
What we have here is claims that gravity cannot be directly detected.
And a claim that water displaced by an immersed [human] body measures weight, mass and fat content, rather than volume.
Anyone care to defend these claims?