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Question of the week: What is the best way to knot my laces?

They keep coming undone.

Mathematicians tell us that there are 43,200 ways of feeding a lace through the six pairs of eyelets on an average shoe.

There are also dozens of ways of making a knot that won't come loose after five minutes.

Probably the best is the double slip knot, which is almost impossible to explain without a series of diagrams.

Basically, it involves making two loops and then wrapping them around each other.

If you want to see how it's done, see www.fieggen.com/ shoelace/secureknot.htm for a quick lesson.