如果他們沒有無線電會怎麼樣？

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我同意我的資訊將根據《大眾科學》和施普林格·自然有限公司隱私政策進行處理。

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John Horgan, who has written for 大眾科學 since 1986, comments on science on his free online journal Cross-Check. He has also posted his books Mind-Body Problems and My Quantum Experiment online. Horgan teaches at Stevens Institute of Technology.

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This article was originally published with the title “What if they don't have radios?” in 大眾科學 Magazine Vol. 268 No. 2 (February 1993), p. 20
doi:10.1038/scientificamerican0293-20

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