What is the name of a knot that cannot be untied?
The simple knot is the most compact of knots, but it is difficult to untie. It is the basis of many nodes. A simple knot, a half-bayonet and a half-knot are often confused, although these are different knots, similar in structure, but different in use. A half knot is a tying knot, a half bayonet is a connecting knot, a simple knot is a locking knot.