This experiment serves as an allegory for Sam, one of Charlie's friends.
We can reach this conclusion because:
Although Sam is not the main character of the book, her existence is very important to show how our emotions can betray us at certain moments, and therefore, we must control them as best as possible.
It's important to remember that "The perks of being a wallflower" tells the story of how Charlie managed to overcome his shyness, making friends, having adventures, and falling in love.
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