Hello, why a thing cannot exist without any properties ? (like being just itself)

I see no reason why properties do not include being identical to the number 7 and being distinct from the number 7. If so, then -- necessarily -- everything that exists has exactly one of those two properties. The number 7 has the former property; everything else has the latter property. If there is no such thing as the number 7, then everything has the latter property. Either way, nothing can exist without having one property or the other.

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