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Eugenics is “back”.
It’s still stupid.

A thread by a doctor.
1. The human race shares 99.6% of all our genes. There’s more diversity in a single group of chimpanzees. On a biological level we are already nearly identical.
2. We don’t have a good understanding of genetics, many desirable “traits” like 'intelligence' for example are made up of over 500 genes.
3. The concept of “good” and “bad” genes is incorrect- many genes with links to “good” traits are also linked to “bad” ones, like intelligence and short-sightedness. Maybe the point is we “breed” super intelligent mole people?
4. For single mutations we know cause disease, we can already screen these out, in a much more precise way, called preimplantation genetic diagnosis.
en.wikipedia.org/wiki/Preimplan…
5. For many mutations we can never screen out entirely because they occur randomly. You can’t “breed them out” because breeding itself is essentially random and creates new mutations. This is evolution.
6. And even if we could do all of the above, the environment itself can influence your genes. For example, children growing up in famine conditions alters their genes and pass those same changes on to their children. This is epigenetics.
7. In studies on the “heritability” of many traits, environment plays the biggest part. IQ for example is heavily influenced by resources in childhood, jumping by as much as 20 points from low-resource homes to high-resource homes.
8. And what are the “outcomes” eugenics is trying to achieve? Many of the “traits” we are talking about are difficult to measure properly, e.g IQ. What about “strength”? That is as much about training and environment as genes?
9. Why stop there? What about compassion? Or emotional intelligence? Or maybe we should ‘breed’ natural rhythm?
10. And what we are aiming for?
What is a "good height" for example?

Should we save money on trouser materials?
11. And ultimately what is the point of eugenics? To build a better society? If that were the case the easiest way to improve the “performance” of society would be to adjust the environment: poverty, starvation, poor nutrition.
12. But the extreme measures proposed by eugenicists seem only to focus on race, which has no basis in actual genetics at all and far more on culture. It’s not about societal wellbeing at all, it’s about racism. Here’s a diagram.
13. So just to summarise - apart from being immoral and inhumane, traits are hundreds of genes, some good some bad, constantly mutating, subject to the environment, has no obvious goal or societal benefit and is completely dissociated from race.
14. Tl:dr - eugenics is total bullshit.
15. No. 10 appointing eugenicists to the highest seat of power in the land is not only repugnant, amoral, and racist; it’s plain stupid. Perhaps they should get themselves an IQ test. /end
Addendum:
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