Ontology

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There was a child went forth every day,
And the first object he looked upon, that object he became,
And that object became part of him for the day or a certain part of the day,
Or for many years or stretching cycles of years.

- Walt Whitman

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Ontology is not the name of Whitman's poem, but it's the first word that popped into my head while reading those lines. And if you are intimidated by the word ontology, like I once was, just know that it simply tries to answer this question:

What does it mean to exist?