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Terotech
- November 21, 2009 @ 19:38 UTC
Presumably the writer is too young to remember the 1960's when the Hoover Constellation was a very popular (and spherical) hovering vacuum cleaner.
It merely used the exhaust from the motor to provide lift. Being extraordinarily
simple it was also cheap and probably took about 9 minutes to design, not 9 years!
professore
- July 30, 2009 @ 01:07 am PDT