… here are two Thunderf00t videos discussing recent projects that have consumed lots of money but which were based on bad science, bad math and bad engineering.
The self-filling water bottle remains a stumper to me. The basic idea is quite simple: a solar powered dehumidifier. Not exactly staggeringly new technology. Yet, the math behind the concept is available and accessible for anyone to do… and the math shows that the idea is *monumentally* impractical. And still people shovel truckloads of cash at these efforts.