Time
Human evolution is full of crises, since the time we have a historical memory, the human experience can be reduce a series of conflicts. We need to ask ourselves, if all this was or is necessary, after all the consequence so far is Genocide towards of each other and how we have got towards this point. The art express in Ice Age, about human experience, but with time the creation of God and State, become justification for a few to be owners, through God and State.
Despite of revolutions and changes where the power of the few and religion, we still dealing fundamentally with the same issue. The power of the few and religion.
Sciences have give us an opportunity for humans to be skeptics, but the threat to question, as result today religious leaders question Evolution. The religious appealing to the validity of their reasoning from ideal of Platonism and deduction of from first principles drawing from Aristotle's.
Science value is from Empirical reasoning, meaning expert or amateurs can validate the work of the assumptions. Many critics of Evolution question the observations or descriptive sciences. Despite Darwin was careful and the mechanism of evolution, genetics even with Mendel work critics will still question Evolution, but what have change is Molecular Evolution, DNA, now the Molecular Evolution has connect the Human History to Earth. Many still question of aspect of Evolution are missing link, but now with the Molecular the connections show with out particular specie to be missing link.
The power of Molecular Evolution is drawing from Empirical reasoning, where experiment can be reproduce, and there is not question of believe.
Power of the God and State is base idea there is a set human nature, in the case of God and State is order of the God. What Sciences show is there is not absolute and experiments and new refine experiments give new inside, but the inside are not absolute, justdepend and experiment knowledge of the time, but does not mean the knowledge has not validity just a limitation, and the technology we have produce has been produce with this limitations.
But always the validity is the Empirical reason, the experiment and able to reproduce the experiment.