A recent article (1) hypothesizes that relational quantum mechanics (RQM) suggests physics might be a science of perceptions, not observer-independent reality. More generally, every individual is living in her own world of reality, and the "notion that we share the same physical reality is an illusion." For over a century, quantum mechanics has been throwing a wrench into simplicity and now it is possible that "perceived physicality is merely a representation of surrounding mental environment, brought into being by an act of observation."
Humans are in a tough spot. On one hand, they theorize about reality and rationality and on another, they find that reality is a function of the individual's observations. There is no physical reality and what an individual observes becomes the reality for her. It is conceptually elegant and it may explain why the 8 billion almost identical specimens of human genome complex across the world see things differently. It also means that systems that seek consensus, such as democracy, may be obsolete.
Eight billion parallel universes, each of which catering to an individual, are difficult to fathom. If each individual has a customized physical reality then it is likely that humans will drift apart from each other over time. Just as the universe expands into nothingness, human societies could fragment to such an extent that islands of individuals are the only available choice.
A random assemblage of complex molecules, the human, apparently rising from a quantum phenomenon, is constrained by her observations and customized reality. She can never understand phenomena outside the reality afforded to her. And, that explains most of the ills of contemporary societies.