educated guess - things tend to stay put on flat surfaces but not rounded ones . . . we're standing on something . . . it must be flat.
evidence holds up - until Magellan's crew made it around the planet in the early 1500's the theory held true as no one proved otherwise.
That was "science" . . . and it was DEAD WRONG.
And which religious leader has ever proven that science has gotten it wrong? Oh yeah, that's right, none of the mistakes made by scientists were ever corrected by a religious leader; they were all corrected by other scientists. That's the way science works. It may make mistakes, but it will eventually correct these mistakes. In order to show that science is mistaken and correct a mistake, you have to do more than simply say, "I don't believe this," or "I can't see how this could be true." You must actually go out and do some science yourself. Provide evidence, observations and experiments. Come up with your own theory which you believe explains things better than the current one. Do some tests that could actually show that your theory is false. If it passes these tests, and actually does explain things better than the currently accepted theory, then it will replace the current theory.