Wednesday, March 7, 2018

Lucky 7 - Tie the Knot!

It is March 7th - and seven is generally considered a lucky number. Lucky Seven goes back to ancient Greece and the mathematician Pythagoras, who decreed the number seven lucky, which would cement in Western culture a belief that also reigns in Asian and the Middle East. Pythagoreans called the number 7 "the Septad".

Seven is all around us:  there are Seven Seas, Seven Heavens, Seven Continents, Seven Colours in a Rainbow, Seven Notes on a musical scale, Seven Days in a week, Seven Wonders of the World and so on. 

Are you old enough to remember celebrating 07/07/77? And more recently there's 07/07/07.  The website had 38,000 couples register 07/07/07 as their wedding date.  

A seminal paper was published in 1956 by the psychologist George A Miller called The Magical Number Seven, Plus or Minus Two. Miller claims that it is more than just coincidence that the number 7 seems to be all around us.
Our immediate memory has been shown to perform well when remembering up to, and no more than, seven things. We can distinguish and make a judgement about seven different categories, and remember around seven objects at a glance.

Looking up Lucky in Wikipedia, I found a reference to Ronald Regan's dog, Lucky.  Clicking the link, I came to the listing of pets of the presidents.  

I was impressed with the range of Calvin Coolidge's pets.  The list is about 30 pets long.  Here are a few: 
Goldy - a "yellow bird"
Enoch - Goose
Smoky - Bobcat
Billy - Pygmy hippopotamus
A wallaby
Bruno - a black bear

And here's his lucky pet: 
Rebecca - Raccoon, intended for a Thanksgiving feast;  First Lady Grace had a tree-house built for her instead.

I don't see any presidents with butterflies as pets.  Here's more from the Butterfly Conservatory. 

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