Logos01 comments on Bayes Slays Goodman's Grue - Less Wrong
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The first thing that struck me was the inherently self-contradictory nature of the grue definition. For physical properties to be retroactively alterable seems to contradict fundamental principles of causality and matter.
Am I simply not understanding the topic? Or is my intuitive-conceptualization too influenced by "timeless physics"? (The notion that all moments in time can be stated to 'exist').
The most you get with statements about "grue-ness" is that some objects which we observed to be "green" were in fact green but after a specific time (T) all changed to another color. This does not change the fact that they were green in the past.
Science seems perfectly-well suited to handling things that change from one state to another. Radioactive decay, for example. If this is some extra-material transition that occurs... well, I just don't see how that's an actually available physical phenomenon. If you change the definition of the term, you are now discussing a new thing.
you are missing the point. nothing changes color. and no definitions are changed, only meanings.
... but meanings are definitions. You can't change one without changing the other. The terms are synonyms.
Time-based definitions just mean you use one definition before time T and another definition after time T. I am lost as to what the paradox here is.
defenitions point to meanings, but the meaning of a term can only be found by looking at the cognitive machines that use the term, and in that specific contxt as well.
...
definition:
A statement of the exact meaning of a word, esp. in a dictionary.An exact statement or description of the nature, scope, or meaning of something.meaning:
What is meant by a word, text, concept, or actionDefinitions are meanings. And meanings are definitions.
A ⊃ B & B ⊃ A ⊨ A = BI remain lost as to where the paradox is supposed to be.
The quotes you give suggest definitions are statements of meaning, not meanings.
... I am not especially aware of there being a functional difference between a "statement of meaning" and the meaning itself when we're discussing what terms mean.
Anything that is applicable to a definition is applicable to the meaning itself. Any adjustment of the meaning adjusts the defintion. Any adjustment of the definition adjusts the meaning. When you have a direct correlation with bi-directional causality, that is mutual identity.
Have you read the cluster structure of thing space? Or the exponential concept space article? I recommend them.
Yes I have read them, and they are not relevant to the topic of mutual identity between 'definition' and 'meaning*'.
*: s/magic/meaning/. Thanks, Swype!Would you similarly say that "mortal" is a term with a self-contradictory definition?