The myth is that Pandora had a box and she wanted to know what was inside but it was forbidden. As she was curious, she opened the box and it turned out that she let out all the evils in the world, which is when she figures out why she wasn't supposed to open it. The myth is used today to describe a series of tragic events that all originate from one event in time. It is used as a proverb. The most credible research would be an encyclopaedia on Greek mythology.
Life is the correct ansswer
Persuasive Devices - Think debates. People will use the art of persuasion to make their ideas appealing to the audience. It applies the same way here. The author will use persuasive devices to make their ideas known to the reader and make them appealing.
I was mad, but they was right all alone because they know what’s best for me