Isn't the reverse of God In The Gaps just as ridiculous? Just because we have been able to use a materialistic, scientific approach to get this far doesn't necessarily mean it will keep working forever on everything.
Using your metaphor at the end: "There's dragons just over the next hill" and "There haven't been dragons so far so there will never be dragons" are both just guesses.
Using your metaphor at the end: "There's dragons just over the next hill" and "There haven't been dragons so far so there will never be dragons" are both just guesses.