TOKYO -- A simple knot, a lasso, a figure-eight knot and a bowline knot. These are just a few of the knots that can be tied by a robot developed at the University of Electro-Communications here.

Tying the strongest fishing knot isn’t only about the knot itself. The line you choose matters every bit as much, and thanks to remarkably advancements in the recent decades, you have choices when it ...