>>99's point is that truth/reality depends on ultimately the people. If a bunch of Physicists decided to tell everyone that the Earth was flat and show superficially sufficient data, then to most everyone, the world would be flat.
And that's how it was some odd hundred years ago. It was a FACT that the Earth was flat.

In this sense, Wikipedia is accurate because it reflects everyone's perception of reality.

On another note, who's to say those Physicists know what they're talking about? How do YOU know? Because a bunch of other people agree that these Physicists do indeed know what they're talking about? So in the end you're just taking someone's word for it anyhow.