Take a look at these four knots, which may look similar but are all distinct. Which knot would be hardest to undo if you pulled on the two long ends of its ropes? Rank them in order from weakest to ...

It works best when it's holding a load, which helps to keep the knot tight and secure. And it has many uses, for example, you can use these rope knots to fasten a mooring line to a ring or a post.

Humanity has been using knots for thousands of years. They're not that complicated— they're just some string tangled up. 'Yet you can show people real pictures of knots and ask them for any ...