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Discover LudwigNo, the word 'xyz' is not a correct or usable word in written English as it is not a recognized word in the English language.
It is often used as a placeholder or a symbol to represent something unknown or unspecified. For example, in a math equation, one might use 'xyz' to represent a variable: "Solve for the value of xyz in the equation 3xyz + 5 = 20." In this case, it is not being used as a word but as a symbol for a mathematical concept. Another example could be in a business setting, where 'xyz' might be used as a placeholder for a company name that has yet to be determined or revealed: "The merger between ABC Corporation and XYZ is expected to be finalized next month." In both cases, 'xyz' is not being used as a word with a specific meaning, but rather as a symbol to represent something unknown or unspecified.
Dictionary
xyz
noun
The color space of the tristimulus values X, Y, and Z.
Exact(60)
Oscar would still be thinking about water, and would probably misidentify XYZ as water; Twin Oscar would still be thinking about XYZ, and would probably misidentify water as XYZ.
Suppose Lake Superior is full of XYZ.
Since (W†) is judged after the slow switch, the initial use of 'water' refers to XYZ.
We can, it is argued, agree that "water" and WATER can refer to H2O exclusively, even if all of the members of the relevant community would classify XYZ as water were they to find some, given their ignorance of water's chemical composition.
To assign epistemic intensions to expressions, we must evaluate conditionals like 'if the actual world is like Twin Earth, then water = XYZ'.
Similarly, if I consider the hypothesis that a scenario in which the oceans and lakes contain XYZ is actual, I will still conclude that the lakes contain water, since in Twin Earth scenarios my water-thoughts are about XYZ.
For instance, if we were to accept as actual a scenario in which the liquid that falls from the skies and fills the lakes is XYZ, we would accept as true the thought that water is XYZ.
A narrow content is supposed to be something that Oscar and Twin Oscar share, and by virtue of which Oscar believes that water is wet and Twin Oscar believes that XYZ is wet.
The question is whether an individual with a belief about water on earth, where water is made up of H2O, has the same belief as an individual with a belief about water in a parallel universe, where water has the same appearance and behavior, but happens to be made up of XYZ.
They also assume that Twin Oscar's interactions with XYZ are insufficient.
The externalist intuition is that, even if these "twins" are unschooled in chemistry, Oscar uses 'water' to refer to H2O yet Twin Oscar uses 'water' to refer to XYZ.
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com