Think of a knot as a unit of speed used around the world for maritime and aviation purposes. 1 international knot = 1 nautical mile per hour = 1.852 kilometer per hour exactly. This is based on the internationally agreed length of the nautical mile. Some think knot is used to refer to the nautical mile itself, but this is incorrect.
A lot of thinking is required to determine knot (speed). "knots per hour" is not a way to think about boat or air speed. It is incorrect because a knot is defined as a nautical mile per hour.
Thinking is also required to tie a knot. A knot is a method for fastening or securing linear material such as rope by tying or interweaving. The number of books, website, videos, and other resources available to those interested in learning about knots is a testament to the value they hold for humankind and how much thinking has gone into them.
There are more than 203 named knots. Apparently nobody could think of a knot name beginning with the letter Q. It is the only letter that does not start the name of a knot.
Some mathematicians think about the entire mathematical theory of knots. The don’t think that any two knots are alike.
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