Transhumanity, Post-Humanity, and Cul-de-sacs
Transhumanity is obviously transitional, hence the use of 'trans' and is a bridge from the previous/current iteration of humanity leading to a new plateau of humanity. What are the new humans? gene-cleaned, genetically engineered and tailored from the toes up, adapted not to a Hobbsian short and brutal life of survival, but a technology enclosed techno suburbanite, living in brave new worlds, under domes, in space stations, on colonies on other worlds.
But Transhumanity is the getting there, but retaining what it is to be human.
Post-Humanity is less obvious. The end result is the same, reaching to a new plateau of civilization, but where the transhuman path retains it's humanity in some form, the post-human path discards it. To the post-humanist many things we take for granted or strive for are not to the benefit or the self, nor the benefit of society, but are the echoes and vestiges of primitive ancestors, the lusts and hollow needs of primates. The post-human is divorced from such biological concepts as sexual reproduction, gender, and sexual orientation. The union is with the machine, with genetic perfection, and such things cannot come from sweaty grunts and spurts of reproductive fluids. Post humanity retains human intelligence, but does so without keeping the human, mammalian, primate identity. Their bodies are shells to be augmented, changed, and replaced as needed.
Then there are cul-de-sacs, branches of development that will not, and in some cases, cannot bear fruit.
In the light of genetic engineering and such, traditional eugenics and racism are comical. What make a human superior to another is not the color of their skin, but the expression of a strong genetic code, longevity, a healthy and productive life.
Sexualism, not sexism, but the exaltation of sex for no other purpose than itself (as opposed to procreation) and as a form of expression. Once gene engineering, programmable dreams, sentient machines, and so forth enters the mainstream, the cliques and enclaves devoted to deviant and non-basic sexuality either push further into the extreme to validate themselves, or wither because no one cares. The LGBTIAP coalition becomes something as ridiculous in the Cosmic Era as the 18th century spiritualist and transcendentalist movement can appear to the modern person (Shakers, phrenology, radium medicine, quack medicine, etc)
This is not a personal condemnation of these lifestyles, I just imagine/project that in a few centuries, this general time period is going to be looked at as an explosion of just weirdness for the sake of being weird. The number of letters in the soup will get longer and longer to a point where no one cares about what the next group is, and then it will start collapsing back down to the most basic iterations of alternate lifestyle. Then, like wondering if those new immigrants next door are Germans, dirty Irish, or thieving Dutchmen it will become completely irrelevant, because who cares if you enjoy sex with your own gender when the issues are forming marital relationships with machines, infomorphs, a post-human being, a construct of computer code, a clone, etc. After that weirdness no one cares. You're still a human in a relationship with a human. Those that fixate on the alternate lifestyle and try to change the world to suit them will be left behind.
Sexism: Once things go to the genetic level, and there are way more robots and such, the difference between men and women begins to shrink, as plumbing doesn't affect the ability to drive a mech, control a machine, or manifest parapsychic abilities. Sexism, while still present, is a social relic and a function of ingrained values rather than the continuation of long held anti-feminist beliefs. Plus machines and such are able to have children, taking the reproductive burden off of women.
more stuff, out of time. Time for work.
This is controversial stuff and it feels weird writing it.