我发现，快乐的一天，不是一个人做了什么高兴的事情，而是这个人用愉快的方式来看待事情。

A happy day, I'm finding, is not one marked by happy things to do, but by a happy way of seeing things.

youdao

So I'm going to put the left and right in inverted commas here because actually what they did was they corrected for people's natural direction and not natural direction.

现在我用反转的方式表示左右,因为,实际上,他们为此做了有关,人自然方向与非自然方向的研究

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