caving knees - nice animation video
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![canadianlbs](https://dakd0cjsv8wfa.cloudfront.net/images/photos/user/e20d/c783/7e5b/c735/c942/ab54/b79b/af6d34a56c7156883c97691367b4e445f361.jpg)
canadianlbs
Posts: 5,199 Member
this is pretty neat. sometimes it does help to actually see what the concepts are talking about.
https://www.youtube.com/watch?v=uFBAGVNwhQE
![](https://img.youtube.com/vi/uFBAGVNwhQE/0.jpg)
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Thanks for posting this!0
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Interesting - thanks!0