A revelation as turning sign is an inburst of the unknown. Its meaning is quickly assimilated or incorporated into known forms and structures – or else is quickly forgotten. But the deeper the revelation, the more it transforms the prior framework and continues to inform it.
The leading edge of revelation is what Peirce called the ‘breaking up of habit’ – which ‘will, according to the law of mind, be accompanied by an intensification of feeling’ (EP1:348). The intensity of feeling does not last forever, but one who enjoys it is more likely to learn from it.
The experience of revelation has its roots in the pre-conscious and pre-human, like all experience. Evolutionary biology can even account for it in terms of adaptive value:
The element of surprise is the revelation that a given phenomenon of the environment was, until this moment, misinterpreted. Animals who experience surprise as a pleasure are likely to recognize camouflage and leave more offspring than are their less perspicacious brethren. Selection as nature, filled with live, sensitive beings, is by no means blind.
— Margulis and Sagan (1995, 165)