So, just what are the requirements for an idea to be a valid alternative?
Some sort of evidence for it, rather than "I believe it on faith".
What do I know personally? I wasn't there 200,000 years ago or 4.56 billion years ago either, neither were you. You don't know anything about what happened personally and neither do I.
That would be where the need for evidence comes in.
If one part of the bible is a fairy tale, then there is no reason to believe all of it isn't a fairy tale.
Also, one mistake in Newton's
Principia would mean that you shouldn't believe in gravity.
But even if your reasoning was correct on that point, that wouldn't supply you with a
reason to believe the whole Bible. It would supply you with a
motive to do so, perhaps, but that's hardly the same thing.
Until someone can show me why any of the claims of the bible are impossible ...
Well of course they're
impossible, that's the whole point of making the claims. Walking on water is impossible, raising the dead is impossible. Donkeys can't talk, you can't part the Red Sea by waving a stick at it, humans don't undergo parthenogenesis. You can't turn water into wine, no plague can single out the firstborn, sticks don't turn into snakes ...
If instead the Bible was a bunch of stories that went like this:
And lo, the prophet Jethriel did go forth to buy a hat, and behold, he put it on his head, that he might try it on, and verily it was too tight. And so it came to pass that he tried on a larger hat, and behold, it fitted him full well. And so paid he the shopkeeper, even he who sold the hats, yea, he paid him for the hat in the hatshop that is called Beth-Horeb, and lo, he received change therewith ...
... then it would not have become the basis of a major religion. Its
whole appeal is that it contains stories about things that are completely impossible.