Yohan John's answer to What are the biggest ways in which the world 20 years from now will probably be different from today? What are the biggest 'X factors' (changes that are not probable, but are possible and could be huge)? - Quora

There will be quite a few threats and opportunities facing humanity in the next few decades. They are often relatively easy to speculate about, and even draw historical analogies with. For example, shortages of food and water will cause major strife around the world. Climate change will cause chaos and destruction. Inequality will exacerbate political instability. Technology will replace more and more jobs. But I'd like to propose a future development that is conceivable, yet in my opinion unprecedented in its potential for transformation: the emergence of biotechnology-based telepathy. The spread of a "neuro-technology" that enables telepathy would be a consciousness-altering world event, in every sense of the word "consciousness". A telepathic society might be totally unlike anything we've seen before: it might become a hive mind, or perhaps a collection of hive minds interacting in ways that we can barely imagine. 'ImplanTelepathy' could alter how we see our selves, and how we organ

There will be quite a few threats and opportunities facing humanity in the next few decades. They are often relatively easy to speculate about, and even draw historical analogies with. For example, shortages of food and water will cause major strife around the world. Climate change will cause chaos and destruction. Inequality will exacerbate political instability. Technology will replace more and more jobs. But I'd like to propose a future development that is conceivable, yet in my opinion unprecedented in its potential for transformation: the emergence of biotechnology-based telepathy. The sp