Science vs. God of the Gaps--why the odds are against God

And now, I take a momentary break from writing about my encounters with the irrational, in order to post something rational: this "Atheist Meme of the Day: 'God of the Gaps' is a Bad Argument" from Greta Christina's Blog:

Science doesn't understand everything" is a terrible argument for religion. Supernatural explanations for the world have been replaced by natural ones thousands of times. It's never once happened the other way around. So if we don't currently understand something, why would we assume that it's probably supernatural? Pass it on: if we say it enough times to enough people, it may get across.