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i think it is Artificial intelligence 
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Answer: no matter what is done to the speaker and to her people, her power is such that "still, like dust, I'll rise." This simile suggests that the speaker is lighter than air, floating upward, above the "lies" of her oppressors. The poem is replete with similes. The speaker compares herself to "moons" and "suns" and describes herself as having "the certainty of tides," all images which suggest constancy and a capacity to stay the course and outlast naysayers. The speaker also uses figurative language to suggest that she behaves as if she is wealthier than she is, knowing that there is an internal, natural wealth inside her. She behaves "like I've got gold mines" and "like I've got oil wells," indicating that the speaker carries herself with the confidence of someone who has valuable natural resources, and knows it.
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She returned to her 12th birthday bcuz she thinks it was unimportant. While she was reliving this she realized that all humans are blind. She realized that she took life for granted and did not appreciate the little things. She did not appreciate what she had until she had lost it. In the beginning the other dead people had warned her not to return to the land of the living but she still did it. When she returned she told them "I should have listened to you. That's all human beings are. Just blind people. Thornton wilder is trying to get the readers to appreciate the small things   because later on they become things you regret that you did not appreciate.
hope this helps :)