How old are knots?

Nodes are among the oldest techniques of mankind. Knots are connected with the development of the simplest tools and weapons. To tie knots is such a basic culture technique as to kindle a fire or use a knife. It was only through knots that man could make clothes.
Knots have been used for 50,000 years. It has now been demonstrated that ropes made of natural fibers were produced already 40,000 years ago.
https://www.archaeologie-online.de/nachrichten/menschen-nutzten-schon-vo...