Why all the knots?
From "The Ashley Book of Knots" by Clifford W. Ashley:
"To me the simple act of tying a knot is an adventure in unlimited space. A bit of string affords a dimensional latitude that is unique among the entities. For an uncomplicated strand is a palpable object that, for all practical purposes, possesses one dimension only. If we move a single strand in a plane, interlacing it at will, actual objects of beauty and of utility can result in what is practically two dimensions, and if we choose to direct our strand out of this one plane, another dimension is added which provides opportunity for an excursion that is limited only be the scope of our own imagery and the length of the ropemaker's coil."