Is the fisherman's knot a fixed knot or a slipknot?

The fisherman's knot is as follows:

The fisherman's knot is a slipknot, but it is difficult to untie it. The fisherman is strong and simple, but it is difficult to untie. Generally, fishermen's knots are connected by soft ropes and hard ropes. Avoid using very good rope when connecting, and try not to pull it too tightly when using, so as not to solve the trouble when knotting.

Introduction:

There are many ways to tie knots, which are often used in our daily life. In ancient times, people would "tie knots to commemorate", and the common ones were flat knots and splayed knots.

The figure-of-eight knot is common in life, and the method of tying the knot is relatively simple, that is, one end of the rope is put on the other end of the rope, and then it goes around the bottom and penetrates into the hole of the cross. The figure-of-eight knot is usually used as a simple stop and braking point on the rope, and this knot is very simple to untie.

Flat knots are also common in life. Suitable for rope connection with the same thickness and material, not suitable for smooth rope. The way to tie a knot is to fold two ropes in half, and then take one from the left and right. Pay attention to the correct winding method, otherwise the rope will be weak and it will be easier to untie the flat knot.