Because the scientists have absolute control over the time inside The World (according to Fantomex the time is "liquid"), both freezing it and speeding it up so that decades and centuries can pass within it while time runs normally in the real world, this opens up for new possibilities within the areas of eugenics and genetic engineering. The most promising individuals in each generation are selected while the others are terminated. Also natural selection in the form of the survival of the fittest is possible by exposing the population to different forms of selective pressure. This way, new breeds of superhumans can be evolved within a few months, instead of hundreds or thousands of years. Half a million years inside The World represents only eighteen months on the outside.