Augustus
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I'm not ignoring anything. And I'm also not primarily doing an historical analysis. Let's take "The Ten Commandments" as they apply to 2015: First off, would you content that these are - in any stretch of the imagination - the ten most important moral guidelines we should pursue today?
Assuming you wouldn't claim that, then look at the enormous effort that goes into the cherry-picking and interpreting and arguing over these outdated ideas. Couldn't we easily come up with a cleaner, better, far less controversial set of guidelines? How about the UNDHR?
(Sorry I'm going to start mixing religion and scripture as it's hard to make my point without doing so)
I imagine that I am a somewhat atypical atheist in that just because I don't see religious scripture as being divine, I do think that it contains real value.
If it is a product of humans, then it is a product of their collective wisdom. As it has survived so long, then much of this must contain real value as time is great evidence for merit. As such, we should apply great caution when rejecting ideas that have been part of longstanding religious norms.
Of course human knowledge is fallible, and some ideas do indeed merit rejecting, we should just be careful when doing so though. The best part of religion is that it stops humans from thinking that they are god (am paraphrasing someone who I can't remember to acknowledge here)
I would say that religious values as expressed in scripture are a good start point for discussions. I would say that in these modern times, the idea that humans should not 'play god' is one of the most important. Things like genetic engineering and AI have some of the greatest potential to wipe out humanity and require great precaution.
As such, I don't see the enormous effort that goes into discussing scripture based norms as being futile. There are countless examples of how we destroyed things that were seen as 'outdated' only to find that they had more worth than we initially imagined.
The problem though comes from the people who are literalists who see scripture as inerrant and perfect, rather than those who see it as guiding and malleable.
There are 2 kinds of hubris that are dangerous, the scriptural hubris based on literal perfection, and the secular hubris that thinks human rationality is sufficient to sever our links with the past. A balance between the 2 extremes is favourable.