You've found the hidden switches, evaded the secret traps, and now your expedition finally stands at the heart of the ancient temple inside The Lost City. But as you study the inscriptions in the near total darkness, two of the eight graduate students accompanying you bump into the alter. Suddenly, two whisps of green smoke burst forth and the walls begin to shake. Fleeing for your lives, you come to a room you passed before with five hallways, including the one to the altar and the one leading back outside. The giant sandglass in the center is now flowing, with less than an hour before it empties, and the rumbling tells you that you don't want to be around when that happens. From what you recall of your way here, it would take about 20 minutes to reach the exit at a fast pace. You know this is the last junction before the exit, but your trail markings have been erased, and no one remembers the way. If nine of you split up, there should be just enough time for each group to explore one of the four halls ahead and report back to this room, with everyone then making a run down the correct path. There's just one problem; the inscriptions told of the altar's curse: the spirits of the city's King and Queen possessing intruders and leading them to their doom through deception. Remembering the green smoke, you realize two of the students have been cursed. At any time, one or both of them might lie, though they also might tell the truth. You know for sure that the curse didn't get you, but you don't know which students can't be trusted, and because the possessed students may lie only occasionally, there is no guaranteed way to test them to determine which are cursed. Can you figure out a way to ensure that you all escape? Don't worry about the possessed students attacking or otherwise harming the others. This curse only affects their communication. Pause the video now if you want to figure it out by yourself! Answer in: 3 Answer in: 2 Answer in: 1 The first thing to realize is that since you know you aren't possessed, you can explore one of the halls alone. This leaves eight students for the remaining three paths. Sending groups of four down just two of the paths won't work because if one group came back split two versus two, you'd have to guess who to trust. But splitting them into one pair and two trios would work every time, and here's why. The possessed students might lie, or they might not, but you know there are only two of them, while the other six will always tell the truth. When each group returns to the hall, all of its members will either give the same report or argue about whether they found the exit. If a trio returns in total agreement, then you know none of them are lying. With the pair, you can't be sure either way, but all you need is reliable evidence about three of the four paths. The fourth you can figure out using the process of elimination. Of course, none of this matters if you're lucky enough to find the exit yourself, but otherwise, putting everything together leaves you with three possibilities. If each group gives a consistent answer, either everyone is telling the truth, or the two possessed students are paired together. In either case, ignore the duo. If there's only one group arguing, both others must be telling the truth, and if there are two conflicts, then the possessed students are in separate groups and you can safely trust the majority in both trios since at least two people in each will be truthful. The temple collapses behind you as greenish vapors escape from two of the students. You're all safe and free from the curse. After that ordeal, you tell your group they all deserve a vacation, and you just happen to have another expedition coming up.
你找到了隐藏的开关, 躲避了暗中的陷阱, 现在你的探险队终于到达了 失落之城神殿的中心。 但当你在黑暗中研究铭文时, 一起来的八个研究生中的两个 撞着了祭坛。 突然,两团绿色的烟雾喷了出来, 墙壁开始颤抖。 逃命要紧, 你回到曾经过的房间,它连有五条通道, 包括一条通向祭坛的,和一条通向外界的。 房间中心巨大的沙漏正在流动, 它将一个小时之内流尽。 轰隆隆的声响表明你应该在沙漏流尽之前离开。 根据你来时的记忆, 快速到达出口需要20分钟。 你知道这里是出口前最后一个岔口, 但是你的路标不见了, 没有人记得该走哪条路。 如果你们九个分开, 时间应该足够让每一组探索一条然后返回, 接下来所有人沿着正确的道路跑出来。 但这里还有一个问题。 铭文记载了祭坛的诅咒: 神殿的国王和皇后幽灵诅咒了入侵者, 通过欺骗将他们引向毁灭。 想起绿色的烟雾, 你意识到两位学生受到了诅咒。 在任何时候,他们中有人可能说谎, 也可能说真话。 你确信诅咒并未降临在你的身上, 但是你不知道哪些学生可以信任。 因为被诅咒的学生只是偶尔可能说谎, 没有可靠的检验方法来发现谁被诅咒了。 你能找到一个方法确保你们逃离吗? 不必担心被诅咒的学生会发动攻击, 或者伤害别人。 这个诅咒仅仅影响了交流。 马上暂停视频,如果你想自己解决它! 答案将会在3秒之后呈现 答案将会在2秒之后呈现 答案将会在1秒之后呈现 首先,因为你知道你没有被诅咒, 你可以独自探索一条通道, 其他八个学生探索余下的三条通道。 向两条通道分别派出4人组是行不通的, 因为如果一组回来后分成2V2两个阵营, 你不得不去猜谁可以被信任。 而分成一个两人组、两个三人组 在任何情况下都是可行的, 原因如下: 被诅咒的学生也许说谎,也许没说谎, 但是你知道只有两个被诅咒了, 其他六个学生始终说真话。 当一组返回房间时, 这一组的所有成员或者观点一致, 或者争论他们是否找到了出口。 如果三人组观点一致, 那么你知道他们都没有说谎。 至于两人组,你无法确定他们是否说谎, 但是你仅仅需要任意三条通道的可靠信息, 第四条通道可以通过排除法来确定。 当然,如果你足够幸运,自己找到出口, 那么这些困难都迎刃而解。 否则,把一切联系起来,剩下三种可能: 如果每一组观点一致, 那么或者所有人都在说真话, 或者两个被诅咒的学生在两人组中。 无论哪种情况,忽略两人组。 如果只有一组观点不一致 那么其他两组都在说真话。 如果有两组观点不一致, 那么被诅咒的学生不在同一组, 你可以相信三人组中大多数人的观点, 因为每个三人组中至少两人说真话。 神殿在你们身后坍塌, 绿色烟雾从两个学生身上离开了。 你们都安全了,并且摆脱了诅咒。 历经生死考验之后, 你告诉大家,他们应该好好放一个假, 而且你刚好想到了新一场探险之旅。