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OogieM's avatar

Actually though that sort of incest breeding and close mating is how all domestic species became recognizable breeds. The fastest way to determine if a bull or ram has undesirable recessive genes is to breed him to a cohort of his daughters. Many of the larger bull studs collecting and selling frozen semen will only take a bull on after he's been used on a group of daughters to identify any unknown recessive genes with bad effects.

Now with genomics and DNA sampling it’s much easier to do before producing a bunch lamb chops or steaks.

If you are trying to concentrate and preserve a recessive trait and there is no DNA test for carriers you will, of necessity, be doing LOTS of close breeding. The problem happens if you refuse to cull appropriately from the resulting offspring.

In poultry breeding there are typically inbred lines from which the males of the breed are kept and inbred lines from which the females are kept and the show birds are the crosses of those 2 lines. It’s particularly noticeable in some color variants in poultry because of the weird sex linked color genes in chickens.

So in the larger sense Heinlein is absolutely correct. With known genetics and “clean” genome you can breed as close as you like.

As to Farnham’s Freehold. The beginning of the book is a good description of a decent emergency setup. Similar options are discussed in Friday, Tunnel in the Sky, Farmer in the Sky and other books of his.

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Oshyan's avatar

"Still, the ways in which western society might have to change in order to punish the tech elite for insufficient sharing would, I believe, have very real implications for the project of progress"

I think "project of progress" itself needs to be collectively redefined and adjusted. In many ways we are in a period of such rapid "progress" that we are unable to actually adapt broadly as a society, culture, and civilization. Progress is also uneven across cultures and regions. While the potential benefits of progress may never cease, we have come so far as a civilization that I think it makes sense to pull back on the sharp and fast end of it a bit, to devote more time and overall resources to bringing everyone up to a similar level of quality of life. As long as we're rushing headlong into the future and prioritizing "the project of progress", that may not be possible.

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