Once something has become widely understood, it is difficult to recreate or fully grasp the mindset that prevailed before. But I can attest to the fact that until the 1990s and the advent of MMA, people did not know how to fight -- they were deeply confused as to which techniques were most effective in unarmed combat.
Soon our ability to predict heritable outcomes using DNA alone (i.e., Genomic Prediction) will be well-established. Future generations will have difficulty understanding the mindset of people (even, scientists) today, who deny that it is possible.
The same will be true of AGI... see, e.g., The Mechanical Turk and Searle's Chinese Room. Searle's confusion as to where, exactly, the understanding resides inside a complex computation seems silly to us today given recent developments with deep neural nets and, e.g., machine translation. (See also Thought vectors and the dimensionality of the space of concepts :-)
Effective action #4a: ‘Expertise’ from fighting and physics to economics, politics and government
Extreme sports: fast feedback = real expertise
In the 1980s and early 1990s, there was an interesting case study in how useful new knowledge jumped from a tiny isolated group to the general population with big effects on performance in a community. Expertise in Brazilian jiu-jitsu was taken from Brazil to southern California by the Gracie family. There were many sceptics but they vanished rapidly because the Gracies were empiricists. They issued ‘the Gracie challenge’.
All sorts of tough guys, trained in all sorts of ways, were invited to come to their garage/academy in Los Angeles to fight one of the Gracies or their trainees. Very quickly it became obvious that the Gracie training system was revolutionary and they were real experts because they always won. There was very fast and clear feedback on predictions. Gracie jiujitsu quickly jumped from an LA garage to TV. At the televised UFC 1 event in 1993 Royce Gracie defeated everyone and a multi-billion dollar business was born.
People could see how training in this new skill could transform performance. Unarmed combat changed across the world. Disciplines other than jiu jitsu have had to make a choice: either isolate themselves and not compete with jiu jitsu or learn from it. If interested watch the first twenty minutes of this documentary (via professor Steve Hsu, physicist, amateur jiu jitsu practitioner, and predictive genomics expert).