Michel Jullian wrote:
> > Indeed. It would be like insisting that a helicopter doesn't work by pushing > itself against the air, it just doesn't make sense scientifically. But I guess > it does make sense economically for the people who make a living on promoting > the more mysterious hypotheses :) > The design in the attachment is suppose to fly by pushing the air. Well it will certainly push air but it won't fly. However, it can be made to work as a pump. But suppose it did fly...would knowing how it works as pump be sufficient to explain how it flies? Harry
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