Now I think you're playing with me. Anyway, below is an excerpt from a more reputable philosophy resource:
To be red (or even to be an apple) it must already exist, as only existing things instantiate properties. (This principle—that existence is conceptually prior to predication—is rejected by Meinongians.)
— Stanford Encyclopedia of Philosiphy (SEP)
As only existing things instantiate properties translates as:
1. If properties are instantiated then something exists that instantiates those properties
What does "properties are instantiated" entail other than detectability through senses/instruments?
In other words, existence is based off of detectability. No detectability, no existence. — TheMadFool
the foundation of semantics is ostensive definitions i.e. all definitions can be traced back to a set of objects or a set phenomena that can be perceived directly. — TheMadFool
perhaps the way out of the definitional loop is somehow to point to reality — EricH
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