Let me say this again, they just made $2 million in DONATIONS with 0 requirements to actually bring this device to market.
But the summary says the wisdom of crowds is never wrong!
Seriously though, people need to stop and think: if a random person came up to you in the street, pitched this, and asked you for money, would you still do it? That's basically what's happened. Kickstarter is like Vegas. You put money in, and hope you get something back out. (though one difference is that if the Kickstarter project really does hit it big and earns billions, you don't get anything more, so you don't have a jackpot)
The lights in Vegas aren't paid for by winners, and there's a lot of lights in Vegas.