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Re:AI Recognises Race in Medical Images by ceejayoz on Tuesday September 14, 2021 @09:10AM (#28524201)
It can be both real physiological differences and a social construct, as "what level of bone density tips you from x to y" becomes a question, as does "is an x person with calcium deficiency actually a y person" sort of things that are obviously not the case.
Re:AI Recognises Race in Medical Images by roflc0ptic on Tuesday September 14, 2021 @09:16AM (#28524300)
As someone with a scientific bent who is of the left, I always find it incredibly frustrating when people say “x is a social construct”, because it’s technically true, but also utterly elides the dual nature of the category. Race is a social construct that can be used to infer true things (probabilities) about the real world! Other social constructs that have this property: sociology, economics, physics…

This isn’t to say a lot of people who are into race science don’t wildly overstate their claims, but there isn’t literally nothing to it.

Re:AI Recognises Race in Medical Images by esyir on Tuesday September 14, 2021 @12:32PM (#28527216)
Agreed on both fronts. There's a lot of attempts here to use "race is a social construct" to indirectly claim that race is meaningless, or at least imply that.

People need to realise the following: - Race is a social construct - It's also a proxy for ancestry - Ancestry is a proxy for genetic history - None of the above contradict each other.

It is possible that we could sufficiently redefine race and ethnicity such that the above isn't true, but as it is right now, race is at least moderately coupled to a biological signature.

What should also be emphasized is that race isn't an end-all. The within race variation is far greater than the between-race variation.

Re:AI Recognises Race in Medical Images by mcguire on Tuesday September 14, 2021 @02:29PM (#28528786)
Are you positing a close ancestral link between Africans and Australian natives, say closer than between either and northwestern Europeans?
Re:AI Recognises Race in Medical Images by pessimizer on Tuesday September 14, 2021 @12:55PM (#28527529)
You can't say anything about someone's bone density by deciding that they are black. Averaging the bone density of everyone that you've defined as black might be predictive of distributions of the bone densities of large numbers of people you've defined as black.

But it's just because of the metrics you've chosen. If you started defining race by bone density, and ignored ahistorical half-biblical half-mystical 19th-century human taxonomies, you might find that their classifications aren't interesting or useful for most things. If you controlled for effects that are affected by differential social treatment (like diet and upbringing), you might find most of your metrics are ghosts.

The process of sorting people into boxes for differential treatment based on their qualities affects their qualities.

Re:AI Recognises Race in Medical Images by roflc0ptic on Wednesday September 15, 2021 @08:00AM (#28537958)
I happily grant much of what you’re saying; I think the difference here in my view is that you can define groups in one way, and find that _other things_ can be predicted. No one said, “we will define African Americans by whether or not they have problems with high sodium causing heart issues” and then determined that African Americans have this medical problem. Race is certainly a suboptimal way to predict this medical problem; much better to have statistically determined genetic markers, or better yet, a complete rendering of the mechanisms of action. But we don’t.

I’m all for “variation with groups is larger than variation between groups”, both as a literal reality and also as a practical answer to the question of how do I go through the world without being a jerk to people.

Racial categories are squishy and permeable. So are ideas of species, sub species. They’re useful tools with sharp limitations. Again, some people certainly oversell the utility of the tools, often for malign ends. But it doesn’t mean it’s an entirely bankrupt view

Re:AI Recognises Race in Medical Images by drdeca on Tuesday September 14, 2021 @02:39PM (#28528974)
The following is a response to only your first paragraph:

Huh? If the distributions of bone densities among “people you would visually identify as ‘race X’ ” and “people you would visually identify as ‘race Y’ ” differ, then knowing that an individual would be someone you would visually identify as ‘race X’, gives you some amount of statistical information about their bone density.

I guess you just mean that you can’t make any high-confidence statements that are substantially different than if you didn’t have that information?

Small note on second paragraph: I don’t think the racial categories in question are even half-biblical? I mean, I know in the Old Testament there are lots of things referring to e.g. edomites, or Amalekites, etc. , but I don’t think these are really like, “races”, and I can’t think of anything that really supports the idea of a fixed set of racial categories. But perhaps I’m forgetting/missing something.

Re:AI Recognises Race in Medical Images by ceejayoz on Tuesday September 14, 2021 @03:37PM (#28529910)
> If the distributions of bone densities among “people you would visually identify as ‘race X’ ” and “people you would visually identify as ‘race Y’ ” differ, then knowing that an individual would be someone you would visually identify as ‘race X’, gives you some amount of statistical information about their bone density.

Only if they differ substantially. If they look like https://evergreenleadership.com/wp-content/uploads/2014/01/B..., you can't conclude much from an individual's bone density measurement, even if "people of race X have 3% more bone density than people of race Y".

Re:AI Recognises Race in Medical Images by drdeca on Tuesday September 14, 2021 @07:13PM (#28532788)
I took the word "anything" too literally.

I interpreted "conclude anything from" as "have a different posterior probability distribution" rather than "have a significantly different posterior probability distribution". This was an error on my part.

Thanks for the elaboration.

Re:AI Recognises Race in Medical Images by FeepingCreature on Tuesday September 14, 2021 @09:30AM (#28524491)
It's a deepity, ie. a statement with two interpretations, one true but trivial, and one enormously impactful but false.
Re:AI Recognises Race in Medical Images by roflc0ptic on Tuesday September 14, 2021 @05:16PM (#28531385)
that is a wonderful word, thanks
Re:AI Recognises Race in Medical Images by roflc0ptic on Tuesday September 14, 2021 @05:17PM (#28531397)
also, i miss reading your comments on SSC, are you on ASX?
Re:AI Recognises Race in Medical Images by FeepingCreature on Wednesday September 15, 2021 @02:41AM (#28535979)
Yeah, just not much to contribute lately.