经济学家 Hal R. Varian，有个小散文叫：How to Build an Economic Model in Your Spare Time（via: Kzeng），对别的学科的人也会有启发吧。摘录几段：

The first step is to get an idea. This is not all that hard to do. The tricky part is to get a good idea. The way you do this is to come up with lots and lots of ideas and throw out all the ones that aren’t good.

But where to get ideas, that’s the question. Most graduate students are convinced that the way you get ideas is to read journal articles. But in my experience journals really aren’t a very good source of original ideas. You can get lots of things from journal articles—technique, insight, even truth. But most of the time you will only get someone else’s ideas. True, they may leave a few loose ends lying around that you can pick up on, but the reason they are loose is probably that the author thought about them a while and couldn’t figure out what to do with them or decided they were too tedious to bother with—which means that it is likely that you will find yourself in the same situation.

My suggestion is rather different: I think that you should look for your ideas outside the academic journals—in newspapers, in magazines, in conversations, and in TV and radio programs…

有个大个子名字叫“风”，他空有一身能量，但一无用处。沦落到混混的地步，没人理解。直到有一天。。。

这是个关于风力发电的广告片，由 Nordpol+ Hamburg 帮 EPURON，德国一家可再生能源公司，制作。有趣，对风力发电的阐释也很到位，我非常喜欢。

不知道格志的朋友里面有没有做相关工作，个人觉得做可再生能源很有前途，而且很有意义啊。

Yinzhangqi 翻译了新一期自然杂志上一篇评论文章：Many lives in many worlds。

摘要：Max Tegmark主张，如果接受量子物理是广泛适用的观念，就意味着你也应该相信平行宇宙。

几乎所有我的同行都对它有自己的观点，可他们中几乎没有人读过它。Hugh Everett的博士论文的第一版草稿埋藏在《量子力学的多世界解释》这本绝版的书中，而它的缩略正式版于今年庆祝自己的50岁生日。我记得读研究生时在伯克利的一家小书店中找到它时自己的兴奋，我仍把他看成是我读过的最有才气的书之一。

。。。。。。

从鸟的视角看，Everett的多世界理论是简单的。这里只有一个波函数，并且它在时间上光滑地，决定性地演化，没有任何分裂或者平行化。由这个演化波函数描述的抽象的量子世界包含着巨量的经典平行故事线(世界，连续地分裂和融合，正如许多量子现象缺乏一个经典描述。从它们的青蛙视角，观察着只能感知这整个实在微小的一部分，它们把经典故事线的分裂当成是量子随机性。

。。。。。。

去Yinzhangqi 那儿阅读全部译文。

多世界解释在物理学中备受争议，但艺术家们本能地喜欢它，早已在众多文艺作品中采用了。