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Commenters didn't look at the chart to understand your question.

It's just a mistake in the chart.

"No" should point somewhere else to continue classifying. Also "someone" is ambiguous -- it could mean "someone nearby" (not meteorite) or "someone far away" (possibly meteorite).

https://sites.wustl.edu/meteoritesite/items/some-meteorite-r...

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I don't think it's a mistake - just a cheeky note that if you "saw it fall," you probably didn't. Your own link supports this.

> If you saw a meteor and later found a stone, then the stone is not a meteorite

> Meteorite fragments land far from where you last saw the meteor and there is no way that observers at a single point on the Earth’s surface are going to find fragments of the meteorite. It requires triangulation from several viewpoints, usually with cameras.

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