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Correlation between NASDAQ price, Corn and Gold(Corr=0.945)

 I wrote Python code which shows Correlation between NASDAQ price, Corn and Gold(Corr=0.945). Corn and Gold are best mix I have found. https://gist.github.com/Kouhei-Takagi/a1a9b073f6cd6dacb7eb1ea871d8fd3c I changed some important parts. https://gist.github.com/Kouhei-Takagi/5becaf7c3a24d63ac9c56856e81297f2
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The Hong Kong Coins

2019/11/22.  The Hong Kong Dollars

I am interested for collecting Coins.
These are Hong Kong Dollars, and they are parts of my collections.
I like thinking about the history through coins.

From this picture, Hong Kong 1 Dollar coins became smaller.(It may be difficult to define it from this picture.)
From 1960 to 1971, the Hong Kong 1 Dollar coins were big, but 1980’s coin is smaller than them.
From 1975 to 1988, the 2 Dollars coins are not circle.
I like thinking the reasons and I don’t search the reasons by Google soon. (I search them at last.)

Coins tells us a lot of stories, but many people doesn’t realize them.
This is why I don’t like digital currency. 
Digital currency doesn’t have object, so it is difficult for thinking about stories.

Recently, Hong Kong is in democratic trouble.
It is normal.
The Hong Kong Coins know the answer.
Hong Kong Coins’s one surface is “QUEEN ELIZABETH SECOND”.
There is shock if democratic region shifts to non-democratic region, and it may be the answer. 

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