Not really, in practical sense. Gravitational effects of sound are so weak, scientists are still verifying their findings.

If we assume the pressure and composition of air are the same at the "floor" level of a lunar base, the noticeable effects will have to do with:

• weaker convection

• smaller vertical density differential

AIDS is the collection of symptoms caused by HIV infection.

It is possible to become immunocompromised by other means, but those symptoms are not called AIDS, because AIDS is used only in HIV context.

It is easiest to settle such arguments with a dictionary.

Yes, BMI is grossly inaccurate for fitness estimates.

Bodybuilders in show condition have 2-3% body fat, and a BMI of 35+. They are not fat, but have big dense muscles.

BMI may be generally ok to use for young people who do not exercise and don't have physically demanding work or hobbies.

For male members or the high school chess club, high BMI is likely to select overweight kids, but you can also just look, ffs

The quackery refers to the link between a body type and personality traits. Body types are real. Personality traits are also real.

Same with phrenology. It's quackery, but you can still have objectively pointy head, or short temper.

Laugh at them.