reducing world population to 100, or 10,000 humans who control the planet?

Population reduction is an unfounded alarmists point of view. No sane country would willfully destroy vast quantities of human resource, especially when the means to feed/clothe/house them is readily available.

a super epidemic or a nanobot who reach the brain against which only the chozens one have the antidote may be the way

"why"?

The new clinical trial called Targeting Aging with Metformin, or TAME, is scheduled to begin in the US next winter. Scientists from a range of institutions are currently raising funds and recruiting 3,000 70 to 80-year-olds who have, or are at risk of, cancer, heart disease and dementia.

A baby girl born today is now expected to live to an average age of 82.8 years and a boy to 78.8 years, according to the Office for National Statistics. But if the results seen in animals are reproduced in humans, lifespan could increase by nearly 50 per cent.

One month ago, during the latest minimum wage protest by fast food workers, we presented the machine that would soon put most of them out of a job. We were referring to the nemesis of low-skilled burger flippers everywhere, the Momentum Machines burger maker.

The robot is shown below. It occupies 24 square feet, and is much smaller and efficient than most assembly-line fast-food operations. It provides "gourmet cooking methods never before used in a fast food restaurant" and will deposit the completed burger into a bag. It does all of this without a trace of attitude.

According to public data, the company's robot can "slice toppings like tomatoes and pickles immediately before it places the slice onto your burger, giving you the freshest burger possible." Unlike human workers, the robot is "more consistent, more sanitary, and can produce ~360 hamburgers per hour" or a burger every 10 seconds.

Furthermore, future generations of the device "will offer custom meat grinds for every single customer. Want a patty with 1/3 pork and 2/3 bison ground to order? No problem."

As the company's website adds, "our various technologies can produce an ever-growing list of common choices like salads, sandwiches, hamburgers, and many other multi-ingredient foods with a gourmet focus."

But most importantly, it has no wage demands: once one is purchashed it will work with 100% efficiency for years. And it never goes on strike.

As the company's co-founder Alexandros Vardakostas told Xconomy his "device isn’t meant to make employees more efficient. It’s meant to completely obviate them."