I mean, in retrospect, that makes perfect sense.. But I'd never have come up with that myself, that's brilliant.,(reply>), The most brilliant stuff is often the most simple.,(reply>), Never thought a feminine knight of Charlemagne would be watching videos about physics and mechanics.,(reply>), The funny thing is that Tom made a video about missed yet obvious inventions about 2 years ago. Title is "The Reaction Ferries of Basel".<br><br>Seeing how a lot of world altering discoveries are made by accident I believe there is still a lot out there that still needs to be found. Just experimenting and following up with weird ideas or odd observations is something valuable every human can do and once a proof of concept is there professionals can take over. There probably are a lot of world changing discoveries already on the internet posted by people who did not realise the importance of what they found. One example is the  solution to a mathematical problem about superpermutations and minimal injective superstrings that was solved by someone on 4chan in 2011 and only found last year. The worlds best mathematicians have been looking at that problem for 25 years.,(reply>), @Cloudhex Excactly, the material doesn't have to come in touch with bearings or moving parts. Also the rotating scoops in the bottom are probably much more efficient at picking up material than a rotating screw,(reply>), @Cloudhex Like Tom said, there's physics-wise no difference between turning the casing, or turning the screw. Any limits on a similar system with a rotating screw would apply here as well, but no extra. The advantage as the guy explains is that there's a bigger gap between the screw and the casing which means the product isn't being crushed, which in some cases can be dangerous.