I know you don't want me to list all the early predictions, which are far more numerous and well known.
What like flying cars, atomic vacuum cleaners, a lunar tourisium?
Scientific Speculation (SciSpec, unlike SciFi) has been very accurate in general: Powered flight, mechanical vehicles, medical advancements, ect. Price, Safety, functionality, politics and funding have to be taken well into account though. Flying cars have not happened because they would take up to much fuel, would be horrible unsafe (think of druke drive, except in the air!) and loud as hell (if based of helicopters or VSTOL aircraft) Atomic vacuum cleaners would be to expensive to make and fuel (safe though). The Space race ended do to politics as Russia gave up and America quite as the winner, if it had continued we would have moon bases and been to Mars by now.
As for why I don't think cyborgs, biorobots and AI are in the near future... religious ethics and lack of technology. First, religious freak fight even the research of this type of stuff.
Religion and ethics has done little to nothing to the cybernetic community. nanotech are loved, Biorobotics is nanotech. Biotech research still goes on unharmed, although some of its products do come under political and ethical attack I don’t see much outcry in the future for organ farms and biotech synthesized drugs (as many of today drugs are biotech synthesized) Curing disease and aging have come under little attack as there goals are very universal in acceptance.
Second, none of those three have anything NEAR what would be required for your vision of the near future.
What do you mean? Again consider that technology develops exponentially. We have monkies control robots with implants, we have rats with artificial hippocampus, it not unrealistic to think we will have basic brain prosthetics and augmentation implant within 20year.
AI has been developing at a exceptional rate since the late 1980's with the re-introduction of neural networks and field programmable gate arrays. By 2020’s we will have computer capable of more processing power then the conservative estimates of the human brain's thinking power. We have planes that can takeoff, fly and land them selves, we have cars that can drive them selves, and all this developing at a exponential rate.
If you have some knowledge of a breakthrough, great... but saying that 'growth is exponential' is silly because we don't know what level of technology is actually needed for this stuff to happen.
how is it silly it pure mathematics! lets say you have a error of 10X were you could be off on how difficult something is by +or- 10times your estimate. because your on a exponential curve your off by a decade or two, not centuries.