Augustus
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I don't think so.
I have to disagree with you here.
I'd say the following are as well grounded in fact and reason as any humanistic worldview (not saying they are desirable of course)
- Humans are just animals and human life is no more valuable than animal life. Because 1 human life requires the death of many animals, killing 70% of the world population would be a net good and should be considered highly ethical.
- Human overpopulation threatens the survival of the species. A handful of global powers should thus team up and eradicate 70% of the human population. This means they can keep on consuming and polluting without threatening the planet. Human life has no intrinsic value, so it would be foolish to risk disaster out of some childish sentiment.
Whether we want to do the above is a value judgement, not a statement of pure reason deriving from fact.
What are your thoughts on why fact and reason can't lead to oppressive or brutal worldviews? (The Enlightenment gave birth to both liberal and a profoundly illiberal philosophies after all).
But you make a good point here. I would call it empathy and the desire to pursue a 'good' life.
As a human being I think we have more or less the same basic desires (avoid pain and suffering and pursue health and happiness). But from that common starting point I would definitely want that people use reason and evidence instead of faith and dogma.
The problem is that pursuing health and happiness for one group often comes at the expense of another group. One fundamental human trait is favouring the in-group and empathy only extends to those we view as being sufficiently like us, and who do not threaten our way of life.
For me, reason and evidence tell us that we are a violent irrational species who cannot escape our inbuilt biases and prejudices and, as animals, there is no way we can transcend our fundamental nature.
I see no reason why a society purportedly based on 'fact and reason' need be tolerant and secular humanistic. Of course if we add in the sentiment an mythos we can use fact and reason to choose desirable course of action, but the sentiment and mythos is essential.
What do you think a society based on fact and reason should resemble and why?