The illiterate of the 21st century will not be those that can’t read or write, but those who cannot learn, unlearn, and relearn – Alvin Tofler, Rethinking the Future.
As we all become life long learners, unlearning could be our biggest challenge. Our mental models prevent us from seeing the need for change. We are creatures of the only world we have individually known. Even if you are one hundred years old, the mental models established after humanities second Tipping Point dominate your thinking. They form our intuitions and belief systems.