This is a brilliant example of failure, albeit one that perhaps should have been avoided. A Kickstarter campaign was run a few years ago for an umbrella that worked by blowing rain drops away with air. The concept behind this was brilliant. The physics - less so.

It's a shame that anyone who launches a Kickstarter could do so without an obvious working product, and this is bad - a clear example of someone who, at least, is out of their depth, and at worst, is acting fraudulently. It does, however, make for an excellent postmortem of why the concept doesn't work. Is it forever dead? No, but with today's technology it's not a goer ... yet.