The world around us is merely a set of brain stimulations. Some help us to see, others to enjoy, still others to monitor and control the organism, and so on. But very soon, companies developing neural interfaces (such as Neuralink) will be able to safely feed stimulations from a computer to the brain, primarily its pleasure centers, bypassing the body. This is the first part of the mosaic.
The second part will consist of increasingly advanced simulations of worlds that we ourselves create — take, for instance, The Witcher 3: Wild Hunt or GTA 5 for a glimpse into the future.
At the current pace of progress, in just 10 years’ time we will have perfectly designed virtual worlds with feedback directly into the brain. Add to that the billions of people who will be squeezed out of their jobs by the march of the machines. And the result is a world of digital hedonists — people living in their own worlds that provide all the pleasures and self-realization they need.