A technique or aid for memorisation. In the UK, we memorise the colours of the rainbow with the mnemonic Roy. G. Biv, or the story sentence, ‘Richard Of York Gave Battle In Vain’. These are both easier to remember than the actual order of the colours:
Red > Orange > Yellow > Green > Blue > Indigo > Violet
Mnemonic systems allow the memorisation of huge amounts of information. These include the Peg System (where numbers take the form of interacting images) … or the Loci System, which hijacks our innate recall of three-dimensional space. (The fictional apotheosis of this system may be Hannibal Lecter’s memory palace, where he wanders through his imagination until he comes across Clarice Starling’s mobile number. Brrrrr 🥩🍷.)