If we come from monkeys.Why are monkeys not turning into humans still?
If we came from monkeys.Why doesn't someone make a machine that evolves stuff.And evolve a monkey into a human?
That's not how evolution works. It's not progressive or hierarchical. It doesn't necessarily work toward increased complexity.
OK. how it does work, in a nutshell:
Organisms inhabit
ecological niches, and evolve traits that suit them to their particular habitat and lifestyle. If another habitat or lifestyle possibility develops or presents itself, some individuals may try to expand into and exploit it.
They might not fit quite as well as they did in their previous niche, but if there are unexploited food, safety, living or reproductive resources, somebody's going to try and have a go at it.
The new niche will have different features, though, which favor different anatomical or psychological traits: maybe longer hair if its colder, longer legs if it's more open or there are fast predators, different colors to blend in, &c.
Offspring are not clones. Sex mixes things up, genetically, so each offspring is an individual, with unique DNA. Since each is slightly different, some may be born with a feature that 'fits' it better into the new situation. The difference may be minuscule, but even a slightly better fit will likely confer minutely better survival and reproductive success. More numerous offspring will increase the frequency of the fitter traits, and a new look and lifestyle develops within that niche.
After many generations, l o n g periods of time and, perhaps, continuing habitat change, a whole new species may develop, that doesn't interact with or reproduce with the original clan in the old habitat -- but if the original habitat still persists, so will the original design that best fit it.
So: Monkeys are successful within their particular niche. There's no reason they'd go extinct just because some individuals at the territorial periphery, long, long ago, expanded into new territory, adapted to it and now no longer look or act like their forebears. One species became two. Both thrive within the habitats they're suited to. The new species did not
supersede the old.
Now, as for our coming from monkeys, if you trace our family tree back in time, you won't find any monkeys. The monkeys and apes -- we're the apes
-- branched off from a common,
pre-monkey/ape ancestor.
Google: "primate cladogram"