One thing it could mean is that if Alice came to believe her beliefs were mistaken, she would no longer value the happiness that they engendered; she would not willingly choose to return to her old confidence in those beliefs, for example, in exchange for getting that happiness back.
That said, I expect this is simply false for most Alice.
One thing it could mean is that if Alice came to believe her beliefs were mistaken, she would no longer value the happiness that they engendered;
First, this is true regardless of whether Alice's original beliefs were mistaken or not. It's quite possible for Alice to hold true beliefs and then wrongly decide they were not correct.
Second, the phrase says "is not" using unconditional present tense. It does not say "might not be in the future".
I was browsing my RSS feed, as one does, and came across a New York Times article, "A Village With the Numbers, Not the Image, of the Poorest Place", about the Satmar Hasidic Jews of Kiryas Joel (NY).
Their interest lies in their extraordinarily high birthrate & population growth, and their poverty - which are connected. From the article:
From Wikipedia:
Robin Hanson has argued that uploaded/emulated minds will establish a new Malthusian/Darwinian equilibrium in "IF UPLOADS COME FIRST: The crack of a future dawn" - an equilibrium in comparison to which our own economy will look like a delusive dreamtime of impossibly unfit and libertine behavior. The demographic transition will not last forever. But despite our own distaste for countless lives living at near-subsistence rather than our own extreme per-capita wealth (see the Repugnant Conclusion), those many lives will be happy ones (even amidst disaster).
So. Are the inhabitants of Kiryas Joel unhappy?