"If yesterday was two days ago tomorrow, will the day after tomorrow be today or yesterday?" —Temporal Manipulation 101 final exam, Tolarian Academy "如果说昨天到了明天会变成两天前，试问後天应该是今天或昨天？" ~陶拉里亚大学院时间操纵绪论期末考 我想应该不少人看过这题 之前我照自己的理解，觉得答案是都不对，不是今天也不是昨天，而是明天。 今天=D 昨天=D-1 前天=D-2 明天=D+1 後天=D+2 如果昨天到了明天会变成两天前，这句的意思是如果到了D+1时，再看D-1，中间的差距会 变成2。试问後天(the day after tomorrow，也就是D+2)应该是今天或昨天？这句话其实 是陷阱，因为第一句的关系，目前的时间是D+1，而由D+1来看D+2，中间的差距是1天，也 就是说，这题的答案是「明天」。 但最近有人丢给我一个2005的FAQ 老实说我不太理解... http://archive.wizards.com/Magic/magazine/ (接上面)article.aspx?x=mtgcom/askwizards/1105 November 9, 2005 Q: "I was flipping through the Ninth Edition spoiler on Gatherer, and I came across Temporal Adept's flavor text. After about 20 minutes of critical thinking, all I had was a headache. Is that question actually solvable? Thanks!" --Rick Richmond, VA, USA A: From Devin Low, Magic R&D: "If yesterday was two days ago tomorrow, will the day after tomorrow be today or yesterday?" -Temporal Manipulation 101 final exam, Tolarian Academy "Thanks for the question Rick. There is an answer to this exam question. You're almost there. Let's look at the first phrase first: 'If yesterday was two days ago tomorrow.' For the purposes of argument, assume it's Wednesday today. Then the phrase says: 'If yesterday (TUESDAY) was two days ago tomorrow (THURSDAY)…' When it's Thursday, Tuesday was indeed two days ago. In fact, for any 'tomorrow', two days before that will clearly be 'yesterday.' So the first part of the question is just always true. It's like it said 'If bananas are yellow, will the day after tomorrow be today or yesterday?' That's the same as just asking, 'Will the day after tomorrow be today or yesterday?' So now consider the second part of the question: 'Will the day after tomorrow be today or yesterday?' Again, assume it's Wednesday today. Then the question says 'Will the day after tomorrow (FRIDAY) be today (WEDNESDAY) or yesterday (TUESDAY)?' Clearly, Friday is neither Wednesday nor Tuesday. Likewise, 'the day after tomorrow' is never 'today' or 'yesterday.' So the correct answer to the question is 'Neither.' Best of luck on the rest of the exam. 照FAQ的意思来说， "如果说昨天到了明天会变成两天前"这句和後面的问题完全没关系吗？ -- League of Legends ∕◣(﹎▁▄ _▆▃ ◢▂▄▄▂=◣ ▄▇_▇▄▁ ,◢/'} ◥◣◣▁,="﹊ ▁▕ , ︻▇◣-◣◣ ▁﹊"～,▁ ◤◢◤ Sona, Maven of the Strings ◥▅︼▁▃▅ ▕,{◤ ◥◥█\ \◥ ▅▂`=◥▇ ◤ ▆ ▲{| ● ◥▼▍}▲ ▇▆▄﹊ "Only you can hear me Summoner, ◣◣ ︺ ◢/▎▅ cycefa修改 what masterpiece shall we play today?" ﹊`/●●\ ◤﹊ vcfsvjf原作 --

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