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What is the "Rule of Three" in terms of sculpting characters?

Hello everyone!
Just read “Creating better demo reel with zbrush” - http://pixologic.com/interview/artist-in-action/demo-reel-with-zbrush/1/

And there were the following words:

“…Wireframes show potential employers that you understand important concepts like edge flow,the “Rule of Three” and…”

Does anyone know what is this “Rule of three”? I googled it but no results. There are lots of different “rule of three”. …
Can anyone explain that please?:confused:

It’s not a term I’ve heard of a lot as a modeler, and like you’ve said there are many rules of threes (3 point lighting, for example). Since the page in question is specifically talking about wireframes, my best guess is that it refers to the extra 2 edge loops you might see place around joints, such as the 3 loops that make the elbow here. If that’s the case then it’s not really a hard rule; you can get away with less and you can get away with more, the point is just to show that your model will deform will once rigged and animated.

Thanks a lot, man! I assume you are right…:+1: Thank you very much for your reply!