In this society, bisexuality is seen as fashionable. In the past, they perfected a method to accelerate equine pregnancy. That method is later used in humans, with the result that now humans grow up incredibly fast.
The protagonist is a government agent who is simultaneously researching mind-reading technology and head-preservation technology.
There's a terminally ill genius whose advice is always obeyed by government, and in the end they preserve his head and continue getting his advice by reading his mind. This upsets the genius immensely.
In this society, language has acquired a few quirks: money is now called "love," sex is now called "using," and someone with antiquated opinions is called an "obso."