F1ach: So, if its Bullshit, then its Schafers Bullshit, not mine.
It's just your wrong interpretation. You're equating "I don't know yet what I'll do" with "I have to clue what to do with this amount of money."
What Schafer is saying is that he has only started the creative process and he has no idea where it will go yet. That doesn't mean that he has no idea what to do with the money or even how the money will be spent. In fact, he was very aware of this. The money is spent on developers doing art and programming. Even without having an idea of what the story will be like and how the game will look an experienced developer and manager like Schafer can tell how much time it will take to come up with the concept, to prototype it and to develop it into a complete game.
In fact that's what they started doing after the Kickstarter project was over, thinking of concepts, trying art styles, choosing and developing software tools.
Many Double Fine backers already feel that they got their money's worth just watching the documentary episodes available so far. In fact, that's what Schafer sold in the first place. His pitch was that even if the game is a spectacular failure it will be a hell of a ride. But the game is likely to be good, too.
It's true that Kickstarter is a risk, and it's likely that the Double Fine Adventure will not please all the backers. If you're risk averse then by all means don't invest in Kickstarters, don't pre-order games, don't do anything where you're not sure your money is well spent. But for people who loved the games Tim Schafer made and want a Tim Schafer adventure, helping it happen and helping it be the best it can (by giving it money) is a logical choice, and supporting developers which have an established game studio, such as Double Fine or Obsidian, is a pretty safe bet.