https://freerepublic.com/tag/yibk/ en-us Wed, 19 Nov 2008 15:44:41 GMT Focus Forum 15 https://freerepublic.com/focus/f-news/2134619/posts Your job today is to invent a chain that can tie itself in a knot. The chain can contain little magnets and electrical parts, but when you let go of the ends, a knot will spontaneously form. This means that one end must form a loop and the other end must thread the loop. Give up? Maybe you should learn how cells do it... CEH https://freerepublic.com/focus/f-news/2134619/posts#comment Wed, 19 Nov 2008 15:44:41 GMT