Yoda

[Dynasty]

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He walks gingerly with a cane, unless there's fighting to be done, in which case he displays remarkable agility. This doesn't really make sense to me. Is he old and arthritic, or just faking it?

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If you really want and answer, Yoda's gingerly walking is genuine. When he's in combat, he uses the force for the agility he displays. He chooses not to use the force for normal physical activities.

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I wonder why none of the other jedi adopted his jumping-spinning strategy.

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It's really, really hard.

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Where are the other creatures of Yoda's species, and why hasn't someone assembled an army of these nimble midgets?

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Yaddle was a member of the Jedi Council in The Phantom Menace. She was killed in a novel later. She's the only other member of Yoda's unnamed species to be seen. Here's a picture of her from the film.



Any army of "Yodas" hasn't been assmembled because it would provide no advantage. Being a "Yoda" doesn't give you any special ability.

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After fighting to a respectable draw with the sith lord, Yoda decides to pack it up and go into exile. Further, he supports the idea that Luke should live on Darth Vader's home planet, with the name Skywalker, as the best strategy for "hiding" him.

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What could Yoda do? The Emperor controled the entire political structure of the Republic/Empire. The Senate actually voted to install Palpatine as a permanent Emperor. He also controlled the entire military. The Clone Army was programmed to be completely loyal to the Emperor. In addition, the Jedi were discredit for attacking and disfiguring the Emperor.

The Emperor's victory over the jedi was as complete as it could get. All that was left for Yoda and Kenobi to do was retreat and find a way to win.

As far as hiding Luke, it appears Yoda was right. Nobody ever discovered his presence there.