关于似曾相识（Déjà vu），格志上曾有些有趣的讨论。今天看到新科学家上一条新闻说：Déjà vu created in the lab

IF YOU think you have read this before, you have either picked up an old magazine or have just had a case of déjà vu. Up to 97 per cent of people have experienced that feeling of witnessing a recreation of something they have already seen, and now déjà vu itself has been recreated in the lab. The experiment could throw light not only on the possible causes of the phenomenon but also on the fundamental workings of human memory.

Two key processes are thought to occur when someone recognises a familiar object or scene. First, the brain searches through memory traces to see if the contents of that scene have been observed before. If they have, a separate part of the brain then identifies the scene or object as being familiar. In déjà vu this second process may occur by mistake, so that a feeling of familiarity is triggered …

可惜看不到全文。这段摘要的关键信息有：1、97% 的人有过似曾相识的感觉；2、似曾相识的感觉可能来源于大脑处理信息时发生的错误。

同时贴于格志。

真是服了，从 postshow 看到：

德国的科学家 Nieswoard 正组织一个庞大的计划，他要招募6亿人同时在20日一起跳跃。他说这样就可以改变地球的轨道，并因此改善全球变暖现象。

看这个网站：世界跳跃日。

这在物理上是行不通的，并不能改变地球的轨道，因为没有外力做功啊，除非 6 亿人都坐火箭飞向了外太空。

其实根本没有这么一个叫 Nieswoard 的科学家，根据 wikipedia 上的介绍，这个网站是一个叫 Torsten Lauschmann 的艺术家搞的。