Value is basically a measure of desire. The statement "is valuable to me" means "I want it".
When you say "is not valuable" I interpret this as "you don't really want it". At this point my instinctual response is to ask "and how do you know what do I want and what do I not want?".
Take a close cousin of wireheading -- masturbation. You perform a short, usually solo activity and you get a jolt of pleasure -- very similar to "you've taken control of your reward button and are pushing it without much change to your actual situation". Please estimate the "value".
Yes, of course, "is valuable" is a two-place predicate... in principle, it's meaningless without specifying an agent who judges value. "Valuable to whom?" you might ask... "Me? You? Lemurs? Aliens from Alpha Centauri?"
Similarly, "is poisonous" is a two-place predicate. Poisonous to whom? But in practice, I can say "X is poisonous" without any difficulty, and people understand me to mean "X is poisonous to typical humans".
Similarly, "X is valuable" seems to unambigously mean "X is ...
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?