/tag/natural%20selection

4 quotes tagged 'natural selection'

Food of the Gods
Author: Terence McKenna
Publisher: Bantam Books (1993)
44

...the presence of psilocybin in the hominid diet changed the parameters of the process of natural selection by changing the behavioral patterns upon which that selection was operating. Experimentation with many types of foods was causing a general increase in the numbers of random mutations being offered up to the process of natural selection, while the augmentation of visual acuity, language use, and ritual activity through the use of psilocybin represented new behaviors. One of these new behaviors, language use, previously only a marginally important trait, was suddenly very useful in the context of new hunting and gathering lifestyles. Hence psilocybin inclusion in the diet shifted the parameters of human behavior in favor of patterns of activity that promoted increased language; acquisition of language led to more vocabulary and an expanded memory capacity. The psilocybin‑using individuals evolved epigenetic rules or cultural forms that enabled them to survive and reproduce better than other individuals. Eventually the more successful epigenetically based styles of behavior spread through the populations along with the genes that reinforce them. In this fashion the population would evolve genetically and culturally.


The Origins of Consciousness in the Breakdown of the Bicameral Mind
Author: Julian Jaynes
Publisher: University of Toronto Press (1978)
426

When combined with German materialism, as it was in the wantonly abrasive Huxley, as we saw in the Introduction to this essay, the theory of evolution by natural selection was the hollow-ing knell of all that ennobling tradition of man as the purposed creation of Majestic Greatnesses, the elohim, tnat goes straight back into the unconscious depths of the Bicameral Age. It said in a word that there is no authorization from outside. Behold! there is nothing there. What we must do must come from ourselves. The king at Eynan can stop staring at Mount Hermon; the dead king can die at last. We, we fragile human species at the end of the second millennium A.D., we must become our own authorization.


213

In summary, I have sketched out several factors at work in the great transilience from the bicameral mind to consciousness: (1) the weakening of the auditory by the advent of writing; (2) the inherent fragility of hallucinatory control; (3) the unwork-ableness of gods in the chaos of historical upheaval; (4) the positing of internal cause in the observation of difference in others; (5) the acquisition of narratization from epics; (6) the survival value of deceit; and (7) a modicum of natural selection.


220

I wish to be very clear that consciousness is chiefly a cultural introduction, learned on the basis of language and taught to others, rather than any biological necessity. But that it had and still has a survival value suggests that the change to consciousness may have been assisted by a certain amount of natural selection. It is impossible to calculate what percentage of the civilized world died in these terrible centuries toward the end of the second millennium B.C. I suspect it was enormous. And death would come soonest to those who impulsively lived by their unconscious habits or who could not resist the commandments of their gods to smite whatever strangers interfered with them. It is thus possible that individuals most obdurately bicameral, most obedient to their familiar divinities, would perish, leaving the genes of the less impetuous, the less bicameral, to endow the ensuing generations. And again we may appeal to the principle of Baldwinian evolution as we did in our discussion of language. Consciousness must be learned by each new generation, and those biologically most able to learn it would be those most likely to survive. There is even Biblical evidence, as we shall see in a future chapter, that children obdurately bicameral were simply killed.