"Scientists" predict The Time Machine.

Not a time machine, this is a guy predicting that humans will split into Morlocks and Eloi. Now, much as I respect H. G. Wells as a science-fiction writer, his scientific thinking was not the hardest ever, and certainly his predictions shouldn't be taken as gospel.

If you analyse the whole Eloi/Morlock scenario you'll quickly realise that it wouldn't work: The Morlocks would never need the Eloi, and would replace them with easier food crops/animals, and would become the sole human species.
If the Elois were smart too, then they'd just get rid of the Morlock's. Either by geneering, or by simple extermination depending on how moral the species was at the time.
The whole idea of genetic haves and have-nots is based on the concept that the haves will choose to keep the have-nots around long after it becomes feasible to have a whole society of haves. That is not really likely, because havenots aren't that useful when you have robots.

This post (כ) Kingreaper: May be a pessimist, but isn't pessimistic enough for this BS.