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In dining etiquette, (if you ascribe to that sort of thing) it’s customary to serve food & drink from the left, plates & cutlery should be cleared from the right. In some countries this may be reversed, but there’s usually an order. 
How weird! No idea what that was about then 
Interesting "The heart of the wise inclines to the right, but the heart of the fool to the left." -Ecclesiastes 10:2 Maybe this sheds some esoteric knowledge they are more keen of.
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