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''The Quincunx of Time'' is a short science fiction novel by James Blish. It is an extended version of a short story entitled "Beep", published by Galaxy Science Fiction magazine in 1954. The novel form was first published in 1973. ==Plot introduction== Late in the 21st century, a device called the ''Dirac communicator'' 〔James Blish was fascinated by the work of P.A.M. Dirac and P.M.S. Blackett. His works make frequent reference to one or the other as the source for various devices. The spindizzy device is based on Blackett's theories. The Dirac communicator is based on Dirac's prediction of the positron. It also appears to refer to quantum entanglement. 〕 promises instantaneous communication across interstellar distances. This would allow Earth security, headed by one Robin Weinbaum, to keep the peace. Before one of the devices can even reach a far-away system, someone starts producing predictions that suggest they have advance knowledge of Dirac communications. Eventually it is realized that the new technology incorporates a way of learning about future events. The result is a lengthy discussion of free will versus determinism. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「The Quincunx of Time」の詳細全文を読む スポンサード リンク
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