Although most of us take it completely for granted, the telephone you have in your house is one of the most amazing devices ever created.

What type of introduction does the writer use? What is the impact of that kind of introduction in this essay?

http://grammar.ccc.commnet.edu/grammar/intros.htm

Be sure to check out the five listed ways professional writers use to introduce ideas or papers.

Do you think it's one of these ideas? If not, how can you phrase it?

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The writer uses an attention-grabbing introduction that highlights the significance of the telephone. The impact of this kind of introduction is to spark curiosity and intrigue the reader. By stating that the telephone is one of the most amazing devices ever created, it sets the tone for the essay and generates interest in learning more about its importance. This introduction establishes the telephone as a topic worthy of exploration and emphasizes its significance, enticing the reader to continue reading.