This is what I find worrying:
"Although keeping fetuses alive at the equivalent of 23 weeks is an impressive technical achievement, what about dialling back the clock even further? Why need a womb at all? Simply artificially-inseminate an egg, pop it in a biobag and nine months later, voila.
"At present there is no technology, even on the horizon," said Flake, "to support the embryo to the test-tube stage [when it can be grown in an artificial womb]."
We're limited to our reproductive physiology—in some form or another—for awhile yet to come."