A change in demographic trends takes 50 years before they become plainly visible. The decline in fertility in the sixties started to become visible after 50 years. Cerberus, our population simulator, shows with scientific precision that the replacement of the European society has started, and within 50 years it will be visible and irreversible.
Since the seventies of the previous century, the Western societies have not produced enough offspring to keep their communities growing. The fertility rate (i.e. the average number of children per woman) is far below 2.1. i.e. the level of replacement. A population with a higher rate will grow while a population with a lower rate will shrink. As it is, the Western and Japanese societies will begin to implode 40 years from the moment their fertility rate dropped, and this demographic winter, as this phenomenon is sometimes called, will affect the world more profoundly than the climate change, so politicians and investors should take notice.