What does this image represent?

enter image description here

I understand from context that it supposed to mean "remember" but I don't see why this icon is used for that.

Is there an idiom or saying that is connected to this image?

closed as off-topic by Chenmunka, Glorfindel, stangdon, Peter, Nathan Tuggy Oct 5 '16 at 18:21

  • This question does not appear to be about learning the English language within the scope defined in the help center.
If this question can be reworded to fit the rules in the help center, please edit the question.

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    There is an old practice of tying a piece of string around a finger to help you to remember something. Here's an example from 1884, in a book entitled A Modern Quixote, or My Wife's Fool of a Husband. books.google.com/… – Tᴚoɯɐuo Oct 5 '16 at 9:05
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    I'm voting to close this question as off-topic because it has nothing to do with the English language - it is about a picture. – Chenmunka Oct 5 '16 at 9:13
  • Related: skeptics.stackexchange.com/questions/10441/… – user5267 Oct 5 '16 at 9:15
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    Perfect example of a closed question that actually is about the English language. Why is there such a rush to close things like this? I'll wager there are many on-native speakers (and more than a few native speakers) who don't understand the idiom implicit in the graphic. The OP even asks about the idiom! – P. E. Dant Oct 6 '16 at 5:51
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    @NathanTuggy There are learners of English who will benefit from the question. Yes, it is more an aphorism than an idiom (although we can find sources that describe it as one), but I do think comprehension of English is involved here, even though the representation is graphical. – P. E. Dant Oct 7 '16 at 5:41

It is used as a reminder:

  • a person or thing that makes you remember a particular person, event, or situation.

enter image description here

The notion of a knot used as a reminder probably originates from the custom of tying a knot in the handkerchief:

  • In days gone by, gentlemen would tie a knot in their handkerchief to remind themselves there is something that should not be forgotten. Whenever they reached for their handkerchief, they would be reminded. I believe that tradition is connected with the Greek myth of Ariadne. She was the daughter of Minos and Pasiphaë who gave Theseus the thread with which he found his way out of the Minotaur’s labyrinth. I love taking photos of the threads and knots I find in the streets. Even if these knots were not made consciously by people to remember something, they might as well have been. It triggers my imagination and adds the sense of confusing navigation to the labyrinth of the city.

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