Tbh, we can observe basketball existing. There are a lot of other debatable things that people are excoriated for doubting but their existence is extrapolated from recent data.
Or, something exists, but the claim that it's caused by man is in question because such a thing has existed from millenia before man came on the scene.
Or, something exists, but the claim that it's caused by man is in question because such a thing has existed from millenia before man came on the scene.