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Hi Folks,
Consider this statement:
"The length of the Yangtze River is 6300 kilometers."
What is a "kilometer"?
1. Is kilometer a class? Is 6300 an instance of the kilometer class?
kilometer class: {..., 6300, ...}
2. Is kilometer a function? e.g., kilometer(Yangtze) --> 6300
In general: kilometer(physical object) --> number
"The kilometer function maps a physical object to a number."
3. Is kilometer a property? e.g., a property of the Yangtze River
is kilometer (this doesn't quite sound right; perhaps there's
another way of expressing this that is more natural?)
4. Is kilometer a label? If so, then what's a label?
Or is it something else? /Roger
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