humans have not been engineered to the extent portrayed in Aldous Huxley's novel "Brave New World," which was published in 1932 and is a work of fiction. In the book, humans are created through a highly controlled process of artificial reproduction and conditioning, resulting in a society with predetermined social classes and behaviors.
While advancements in genetics and biotechnology have allowed for certain forms of genetic engineering and manipulation, such as in vitro fertilization (IVF) and gene editing techniques like CRISPR, the level of control and complexity depicted in "Brave New World" is not currently possible and raises significant ethical concerns.
In reality, human genetic engineering is a controversial topic that raises ethical, social, and legal questions about the implications of manipulating the human genome. Many countries have strict regulations and guidelines regarding human genetic experimentation, and international agreements also govern the use of genetic technologies.
The technology and understanding of genetics continue to advance rapidly, but it's important to remember that ethical considerations and societal norms play a crucial role in shaping the direction of scientific research and its applications. As of now, widespread genetic engineering of humans akin to the society depicted in "Brave New World" remains a speculative and far-off concept.