No, it doesn't "follow" and the CDC statistic show very clearly that your alleged "bone density" has no affect on drowning rates. If it did, it would be consistent across age groups and across settings. It isn't.
All people who do not know how to swim should stay away from swimming pools or, better yet, be taught to swim.
WHAT DATA WAS CHERRY-PICKED?
To answer your two questions, I am not sure, but I think the totals are generally more important than subsets in isolation. Maybe you are suggesting that I should have cherry-picked.
If there is a difference in average body densities between two groups, then that is enough to predict differences in drowning rates between the two groups. It is not necessary that the body densities be consistent across ages, genders, situations, or nations. I ignore it because it isn't relevant. I cherry-picked data because I ignored data about the height of rose bushes in Wales.
That is an interesting result. It means that the body density of the average elite adolescent competitive swimmer is about equal to the body density of the average young black man. I think such a body density among elite swimmers would follow from high muscle mass and low fat. Do you take it as an argument that body density is not a variable of drowning risk? If so, then I will respond to it.
except that it isn't because it does NOT "predict" anything. If it did, it would be consistent across ages, genders, situations, or nations.
I normally take a difference between two groups to be relevant for only those two groups. Body density is a single significant variable of drowning risk, but drowning risk is multivariate. Nobody should make the mistake of thinking that body density is the ONLY significant variable, like there is a 100% correlation between body density and drowning probability. There isn't. Swimming ability plays a part, for example. Access to swimming environments plays a part. And body density plays a part. A robust way to go about proving the point would be with a multivariate analysis. Lacking that, I rely on physics. I have the same style of argument with global warming. It is easy to make a lot of ad hoc claims about what may raise global temperatures, but the argument from the physics of the greenhouse effect is strongly predictive. You can just ignore physics and rely on speculations, but why would we?
Not when you are attempting to show that an isolated factor (bone density) is the primary factor in drownings. IF bone density was the primary factor, then bone density would be the primary factor regardless of age, gender, bodies of water, or nationality.
It really does not follow. I claim that body density (not just bone density) is the most probable primary causal variable in the difference in drowning rates between whites and blacks in America. It does not necessarily follow (though it may be) that the same variable is the primary variable that explains the difference in drowning rates between 1-year-old children and 18-year-old adults, nor between frequent swimmers and non-swimmers, nor between dogs and humans.
You have completely failed to show that bone density actually plays any part in any drownings. Now, when forced to admit that the real factor - swimming ability - "plays a part" you think you can slide "bone density" in on equal footing? Nope.
actually, your OP claims BONE density, and also claims lung capacity as your favorite red herring. But we know that you like shifting goal posts whenever your "logic" is found fault. For instance, in your OP, you cherry picked "US" and "swimming pool" drownings. A few posts above, you claimed that you were citing totals, and objected to me pointing out that whites far exceed blacks in boating drownings, or that drowning among white children under the age of four in swimming pools far exceed those of black children under the age of 4.
Except for the variable of swimming ability, you are correct in this isolated point, but then you also hereby discredit your main racist thesis about bone density, lung capacity, body density or any other supposed genetic differences you apply.
