Right, so I was correct when I said that “by taking NDEs at face value” what you mean is “accepting that people are seeing into the afterlife.” I already stated that such an interpretation is EVERY BIT as much of an “explanation” as saying “oxygen deprivation” is. What’s more, we actually do know a lot about how the brain behaves (and what people experience) when they are deprived of oxygen and they tend to mirror many aspects of many NDEs; is that just a coincidence? I don’t know why you equate seeking materialistic explanations of NDEs (the same materialistic explanations that have explained many, many things people once thought were supernatural) with “sanitizing the evidence.” People are generally quite ignorant about how their own brains function, so if you go through an experience that is traumatic for your brain, why is it more natural to assume that the experience was supernatural rather than neurological? How can you rule the latter out?
Ugh, you still have no understanding of what MW actually is. MW does not “add on to” the “standard” (lol) “Copenhagen interpretation.” If anything, it’s Copenhagen that “adds on to” the much simpler interpretation of MW, and needs to add more if it hopes to reconcile itself with General Relativity and Locality.
Which may fit nicely into your metaphysics, but has no actual, you know, evidence to support it. It’s just a blatant example of the Wishful Thinking fallacy.
Yes, let’s look back 2300 years for insights into modern cosmology; you know, back before they even knew the Earth moved around the sun.
One of the major points Yudkowsky makes here (and elsewhere on Lesswrong regarding the nature of truth) is that when we ask if a proposition is true, it’s important to ask how different the world would be if it wasn’t VS if it was. EG, to list an easy example, how would things be different if the proposition “humans can fly” was true. Well, one way things would be different would be that if you jumped off a cliff you wouldn’t plummet to the ground. Now, apply that question to the nature of “free will” and “purpose.” How would things be different if there was such a real, ontological thing as free will and purpose as opposed to just a belief/feeling of these things produced by the finite algorithmic processes of our brains?
Let’s assume for a moment that we DO live in a deterministic universe where we have no ACTUAL, ontological free-will or purpose. Now, let’s assume in this universe that we are given finite, fallible brains that found it evolutionary advantageous to equate their ignorance of these deterministic process with “free-will,” and equate what those processes lead them to do as “purpose.” Now, how would that world be DIFFERENT than the world we find ourselves in? Similarly, you can do this while supposing that we live in an indeterminate universe where there is ACTUAL, ontological free-will and purpose. AFAICT, there’s no difference (at least superficially/experientially) in these two hypothetical worlds and the world we experience now.
Now, given that there’s no difference, the question then becomes which world is more likely and how do we determine that? The answer is found an old favorite known to laymen’s as Occam’s Razor, or, perhaps more technically/mathematically as The Conjunction Fallacy. To explain this, answer this illustrative question: Which of these two propositions is more likely: A) Jane is an accountant or; B) Jane is an accountant who plays jazz in her free time. The answer is A, though you’d be surprised how many get it wrong. B can never, ever be more likely than A. It can, hypothetically, be just as likely, but it can never be more likely.
The way this applies to the issue of free-will purpose is by asking the same question: Which is more likely: A) We feel we have free-will and purpose, or; B) We feel we have free-will and purpose and we actually do. The answer is the same as above: B cannot be more likely than A, and, in this case, it can’t be equally likely as we don’t know the probability of B beyond that it isn’t 100%. The point being that the proposition “we feel we have free will” is more likely because the ontological claim to free will and purpose is adding on to that proposition. So the experiential claim plus the ontological claim is less likely than just the experiential claim… unless you can think of how the world would be different if the ontological claim was true VS if it was false.
FWIW, I don’t really have an opinion on this one way or another. I think the whole question of free-will and purpose is one of those things philosophers like to ask that has no real-world meaning (ie, unanswerable questions). I also don’t think the whole “lack of freedom/purpose = deterministic materialism” is as simple as you make out as it really depends on precisely how one defines these terms. There are plenty of writings out there that have attempted to reconcile determinism and free will. One many-worlds faq offers this brief hypothesis. There’s also a whole branch of philosophy called compatibalism that thinks free-will and determinism are, well, compatible. Daniel Dennett has written a lot on this in books like Consciousness Explained, Elbow Room, and Freedom Evolves.
Perhaps “illusion” was a bad word. I don’t mean that freedom would be an illusion like, say, how magicians use sleight of hand illusions. What I mean is that it’s possible we mistake an intuitive feeling of freedom with actual (ie, ontological) freedom. It’s why I ask above about how the world would be different and all that.
You do realize that the most popular interpretations of QM today (not just MW) are deterministic, right?
I don’t see this as being an adequate description of how scientific beliefs change. I mean, I guess you could call Einstein’s eclipse experiment that proved Relativity a “punctuating crisis” for Newtonian physics, but it would only be on a metaphoric level. In general, I just don't see scientists so dogmatic when it comes to holding on to beliefs in the face of new, overwhelming evidence as do, eg, the religious.

