Tuesday, January 29, 2013

Faminly visit in Gothenburg, Sweden

最近因为工作的原因再次来到Sweden。和之前不同的是,这次终于有机会去瑞典同事家里做做。B同事家在离城40公里左右的小镇上,晚上5点多从公司出来,K同事开车和我们一起过去。非常搞笑的是,K车的后门居然被冻住了,我和B不得不从前门爬了进去。城里速度不快,在临近高速的时候堵了一会儿。闲聊中,K说最近哥市开始收市区拥堵费,只要被路上的摄像头拍到就会被收8SEK,最高貌似是17SEK一天。哥市开车的人数由此下降了20%。

B同事的家是一栋独立的二层小楼,前后左右有很多长得一模一样的house。一层进门左手边是厨房和客厅,右边是三个卧室和二楼的楼梯。客厅装修是典型的宜家风格:简约。客厅的正中放了餐桌,餐桌下貌似铺了地毯(当然也有可能是铺在沙发下面,记不清楚了)。 女主人很热情,但cooking却是B同事亲自下手完成的,不知道瑞典是不是都是煮夫。 晚餐还不错,煎土豆,煎猪肉,沙拉和某种不知名的小菜,餐后甜点是某种berry pie。餐后聊了很多,但影响最深刻的是这栋house只要不到200W SEK,同样的价钱,我在北京只能买一个建筑面积60多平米,使用面积50多平米的flat。

哥市有一个之前的同事H在STA,恰逢另外一个同去的同事G上周五过生日,就一起去H租住的flat做饭吃。H的flat在市区临街某楼的三楼,电梯超小,不过房间还不错:一室一厅一厨房。客厅很大,不过卧室就有点小了,目测只能放下一张单人床。

总的来说,K市的居住环境还不错,比帝都强多了。

Monday, December 31, 2012

2012年终总结

  1. 今年春节发生的方舟子和韩寒的论战意外地给几乎整个”微博界“带来了一场科普教育,也给我自己带来了深刻的影响。我借以去反思自己的思维模式,开始尝试着用科学的思维去思考问题、认识世界:拒绝中医;尝试以科学的知识指导饮食和锻炼身体; 开始学习关于大脑的知识和人类认知模式的缺陷。可以说,2012年是科学年。
  2. 薄熙来,王立军,薄谷开来,周永康,令计划,政坛上的各路神仙们粉墨登场,为十八大上演了一场场精彩绝伦的show。十八大虽然已经结束,但如何解决政治争议,如何选举领导人的问题却远远没有找到答案。政治,经济,民主,三个复杂的问题互相交织在一起,我们离正确的答案到底还有多远?
  3. 今年买了房子,正式迈入房奴阶层。3万一平的价格,四五年前哪里会想到房价能疯涨致如此。 合理或者不合理,房价涨跌的预测更像是一场赌博。这就好像2009年的股票,你以为自己知道,其实你什么都不知道。希望2013年能抽空学习一下房价的相关理论,至少应该知道自己知道什么,不知道什么。
  4. kindle给我带来了巨大的变化。 今年开始尝试着用kindle在Amazon上买书和杂志。这些优秀的英文杂志和书籍打开了一扇崭新的窗户,希望自己能用这扇窗户重新认识自己、社会以及环境。
  5. 2013年写了二十几篇博客,除了2006年,算是最高产的一年了。希望明年能保持这个趋势,多思考,多记录。
  6. 删除了MSN的帐号,并尝试着删除更多的无用互联网帐号。有时候,多不一定好,很多东西,够用用好就很不错了。毕竟人脑是非常limited。
  7. 个人生活有了重大变化,希望明年能翻开新的一页。(限于隐私,具体就不说了)

PS: 整个行文风格是模仿土摩托的2012年终总结,并于2013年来临前匆匆完成。

Thursday, December 06, 2012

Outlook2010's stupid category strategy

I switched to Windows 7 + outlook 2010 for my working laptop several weeks before.Then I found the color category always appear on email I send out and new email I get automatically. Finally Microsoft has confirmed it is caused by design.

I used to use color category to organize my email and divided them into "to-do" and "waiting" based on different priority. Now it doesn't work. And stupid outlook "follow up" flag couldn't change color. Right now I have to remove color category by hand on some email.

Email from Microsoft: Symptom: You are currently having a problem with categories on Outlook 2010 client. Specifically since the migration from Outlook 2003, you are seeing inconsistent behavior regarding the color categories. If you add a color category to an email and then reply, the category will be shown on the reply message as well. Other users don't have this problem so far. Cause: By design Resolution: If you put a category on an email when you receive it (a new email and not a reply from a conversation) the category information will follow on all the other replies that will be sent on this thread. Even though you later remove the category, if you reply to this email or any other email from the conversation, it will still keep the original category. However if you put a category on an email after you already sent and received emails on that conversation, and you then reply to that email, the reply will not have the category. To make sure the thread doesn’t contain category information you can click on the category square from the conversation title (the upper most header of a conversation) to clear all the categories from that thread. This is why you couldn’t reproduce the problem with a new email. I have confirmed this along several tests and even with an Escalation Engineer. It is considered by design because the information is stored on the entire conversation, but there are ways to avoid it if you place the category on the emails after sending at least one reply. Thank you for your collaboration, Best regards,

Monday, November 19, 2012

手机微博和Dopamine

Wang Pei的某篇blogger谈到了放弃智能手机,之前新浪微薄上的和菜头也宣布放弃微博。这两件事情粗看反映的都是由于技术进步而造成的信息过载问题,英剧黑镜子中的某集(能够回放所有视觉信息的装置)反映的其实也是类似的问题。手机和微博的实质都是供给信息,很明显,绝大多数人都喜欢阅读这类信息。这是因为我们会在阅读信息的时候产生”快感“,实质就是某种多巴胺(Dopamine)的分泌。国外有不少关于social media和Dopamine关系的报道,比如http://www.computerweekly.com/blogs/enterprise-social-software/2009/11/the-role-of-dopamine-in-social.html。

从某种程度上来说,人类还没有脱离远古的hunter模式。手机/微博阅读,游戏,本质上都是Dopamine驱动的seeking reward。手机/微博的阅读都是短阅读,更容易产生持续不断的reward。但大量同质的信息可能容易让人产生疲惫感,而且Dopamin的分泌和任务的难易程度有关。最佳的Dopamine分泌应该是在完成有一定难度的任务后分泌的。从这个程度讲,我猜想Wang Pei和和菜头远离微博的原因其实是大量持续同质信息引起的大脑疲倦。大脑需要新的,更有挑战性的刺激才能分泌出Dopamine。

从某种程度上说,人类就是一个被Dopamin驱动的,不断在升级打怪的游戏角色。当我们完成某级任务后,就必须寻找下一个更有挑战的关卡。不断重复现有关卡只能让人感到疲倦和烦躁。

Saturday, November 03, 2012

I3-wm: container VS windows

In I3-wm 4.3, container and windows is a little confused and complex. I try to give a easy understand introduction

First thing you need to understand is that I3 is tiling window manager which means each application couldn't have overlap and only are allowed to put into each "container". You could image you screen as a excel sheet which have many cells. And your application could only stay in cells.

Second, your screen is just a container.And it is possible to divide it into many smaller containers. And these smaller containers are "equal" which means they have to sit side by side (horizontal) or top by top (vertical). For example, you could dive screen into three equal rectangles side by side. But how about if you want two big rectangles and two small rectangles? Yes, you could divide one big rectangle into two small rectangles.From there you could understand that container is physical cells on your screen and you could use horizontal/vertical arrangement to organize them.

Third is windows. Container is physical screen and you could put several windows into one container. But all the windows are same size with container and they are face to face sit. You could use "stack" or "tab" to switch.

Saturday, October 20, 2012

Reading note 1 -- the moral landscope (chapter 3)

Do we have freedom belief

  • A belief -- to be actually believed -- entails the corollary belief that we have accepted ti because it seems to be true.
  • This does not mean, of course, that we have no mental freedom whatsoever. We can choose to focus on certain facts to the exclusion of others, to emphasize the good rather than the bad.
  • What this shows is that people tend to be risk-averse when considering potential gains and risk seeking when considering potential losses, so describing the same event in terms of gains and losses evokes different response.
  • It is startling to see the principle so clearly demonstrated: expectation can be, if not everything, almost everything. Rosenhan concluded his paper with the damning summary:"it is clear that we cannot distinguish the sane from the insane in psychiatric hospital."

Sunday, October 07, 2012

人类的大脑就是FPGA和CPU的混合体

推荐think fast and slow这本书。简单的说人类的大脑就是由反应迅速(直觉)但算法固定的FPGA和启动缓慢,能耗极大,算法不固定的CPU系统组成。而且人类是一个奇怪的物种,我们总是倾向于生活在一个确定性的世界中,即使这个确定性有可能是错误和有缺陷的。

由于算法老化,长时间不更新,FPGA系统在新的环境中常常会犯错误。从某种意义上讲,这是不可避免的。FPGA中的大多数算法应该是在很久以前(几万?几十万几百万?)在漫长的进化过程中形成的,比如人脸识别、情绪状态的捕捉,以及特定的决策模型(比如羊群效应),这些应该是通过gene遗传下来的。当然后天的meme也应该可以塑造新的算法,比如类似于1+1=2的计算,围棋选手所谓局面的判断,传说中卖油翁的熟能生巧,都应该是后天形成的快速算法。这类算法的实现应该是需要通过大量重复或类似的练习。

CPU系统是所谓的logic系统,启动困难,能量消耗大,而且内置寄存器有限。但算法可以根据需要不断更新,这就是所谓的理性的大脑。

我猜测FPGA系统也应该和性格、情绪相关。婴幼儿时期的成长环境会塑造不同的性格情绪模型。当然也有可能gene或者量子不确定性对性格情绪的影响更大。但不管怎样,性格情绪可以看作是某种内置的FPGA,算法固定,反应迅速,往往在理性之前就启动了。

由于FPGA系统的存在,我们应该认识到直觉往往是不可靠的,同时我们的决策和认知也有可能存在各种问题。我们往往会在信息不明确的情况下*迅速的*作出错误的认知和决定。当然有些决定必须在信息不明确的情况下做出”模糊判断“,但对于有些问题,slow一些,收集更多的信息再做出决策才是正确的选择。

Tuesday, September 04, 2012

民族和人类的大脑

2012年35期的三联是土耳其专版,讲述了土耳其的历史,文化和现状。 按照土摩托的说法,土耳其和中国在20世纪初是极为相似的。曾经伟大的帝国面临衰落,旧有的经济社会体制急需改革。和中国不同,土耳其的前身奥斯曼帝国是一个多民族组成的庞大帝国,在外部巨大的压力之下,整个帝国瓦解了,只留下了所谓“纯血”的突厥人和其领土。而中国则基本保留了民族完整性和领土完整性(当然外蒙古独立出去了)。

民族对于国家而言是极为重要的,它是区分我和“非我”的重要标识。所以对于多民族国家的稳定性要远比单一民族国家差。但随着社会的发展和科技的进步,民族在自我标识上的意义越来越减弱。人们更容易拿其它特质来标识自我。

更为有趣的问题是,人和人的差别其实是巨大的,为什么民族这样一个简单的标识会被普遍用来标识我和“非我”,而随着社会的进步,人们则更趋向于利用更为复杂的因子来标识自我。这是不是由人类的大脑结构决定的? 是否存在某种机制来减弱和强化自我的标识?