"Kickstarter co-founder Yancey Strickler responds. Backers are signing up to participate in the development process, including all of its obstacles and setbacks. "If you want a watch, you can go buy a watch," Strickler says.

I don't know that Kickstarter can be any more clear to backers than they are that when you back a project you are not buying an item and you are not guaranteed a successful result.