The sentences that could be removed as they are irrelevant to the main topic of the paragraph are:
1. Sentence 7: "I wonder who named the technology assistants." This sentence is a random thought that does not contribute to the main discussion about the benefits of technology in our lives.
2. Sentence 10: "We are saving the world!" This sentence is an exaggerated claim that is not supported or explained in the paragraph. It does not add any relevant information to the main topic of the paragraph.