Meh. They definitely gave the appearance of having a working prototype with the crowd-funding for a more refined model. If you look at 3:15 in their video there

Meh. They definitely gave the appearance of having a working prototype with the crowd-funding for a more refined model. If you look at 3:15 in their video there's some footage of a prototype looking dragonfly actually flying. There are also several photos of the same on the page. Most backers assumed smoothing those prototypes out for production was a reasonable endeavor. Unfortunately as the project's unfolded it became more and more clear that the group of people running it didn't really have the experience to deal with production even though they clearly had a product. I think a combination of wanting the product to be significantly better than their initial prototypes and a poor idea of how to deal with Indiegogo/Paypal/Factories/Production kind of doomed things. Likewise, they haven't been very smooth or fluent in terms of their communications with backers. All that said, as a backer, I'm mostly disappointed they didn't have someone with more communications fluency and experience with manufacturing to run things, as I think that alone would have enabled the product to be a success. I'm not in a position where the money makes or breaks me and I tossed it away several years ago. Pointless to get too emotional about a sunk cost unless it comes out that there really has been some kind of gross mismanagement/negligence and not just some random grad-student types getting in way over their heads.