The mind-boggling ratio of a circle's circumference to its diameter is called π (Pi). Being an irrational mathematical entity it doesn't reveal itself in fraction. Its decimal representation neither ends nor does it repeat a permanent pattern! It's an enigma. It has captivated the human intelligence for millennia.
In layman's terms pi is a never-ending number - This incomprehensible phenomenon has bothered not only the mathematicians, but also the lawmakers perhaps. On 18 Jan 1897 the state legislature of Indiana had proposed a bill (House Bill No. 246) to legally define the value of pi as 3.2! This incredible story originated from the pet obsession of a physician (living in Solitude, IN) with the age-old geometrical problem called 'Squaring the Circle'. Surprisingly that notorious bill was passed by the House unanimously (Ayes: 67, Noes:0), but it got postponed indefinitely in the Senate on 12 Feb 1897 due to the intervention of Professor C. A. Waldo of Purdue University. This bill is popularly known as the 'Indiana Pi Bill'.
With the rapid development in computer hardware and software, in this 21st century, the zeal to discover the maximum number of digits in the value of pi has touched new height. The current world record stands at 22.459 trillion decimal places!
This Wikimedia link shows the chronology of human endeavor to discover more approximate value of pi.
In 1981 an Indian could memorize and recite more than 31,000 digits of pi. A Japanese recited 40,000 digits in 1989 and broke that record. By reciting 67,890 digits a Chinese holds the current Guinness World Record.
To achieve such impossible feats these champions used an ancient method called the 'Method of Loci'. In Latin loci means places. This technique is also known as the 'Memory Journey', 'Memory Palace', 'Mind Palace'.
To follow the 'Method of Loci' you have to visualize a familiar place. Then you have to roam that location mentally and drop the chunks of the digits at various spots. To recall the complete sequence of digits you have to repeat that exact route!
To remember lesser number of digits there is an easier technique. It's a style of writing called Pilish wherein you form such a sentence that the numbers of letters of those words coincide with the digits of pi. Some examples of such sentences are -
- How I wish I could recollect pi easily today! (= 3.14159265)
- May I have a large container of coffee beans? (= 3.14159265)
- May I have a large container of coffee, cream and sugar? (= 3.1415926535)
- How I need a drink, alcoholic in nature, after the tough chapters involving quantum mechanics! (= 3.14159265358979)
- How I need a drink, alcoholic in nature, after the heavy lectures involving quantum mechanics! (= 3.14159265358979)
There is a book written in this style; its title 'Not A Wake' is also in Pilish! This book has 10 sections and each section contains 1000 consecutive digits of pi.
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| Source: Amazon |
Piku and Piem are two other methods for this purpose.




