happydolphin on 18 December 2012
| dsgrue3 said:
Well, naturally you cannot affirm existence by itself, thus it need be observed to exist. Circular logic doesn't work. We have observed fossils of dinosaurs, so their existence is affirmed. We have oberved atoms and matter at present, confirming their existence. I think this clarifies the definition provided.
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That is a good point. But we can't say, in the converse, that until the fossils were found, that dinosaurs didn't exist. That's the flip-side of it.
