你还是以前小时候那个你自己吗?

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以前哲学学过ship of Theseus,

in the metaphysics of identity, the ship of Theseus is a thought experiment that raises the question of whether an object that has had all of its components replaced remains fundamentally the same object.

我还是小时候那个自己嘛? 我觉得不是,如果我从不同的角度来看,比如小时候不知道长大了要当科学家是什么概念,现在知道了,觉得自己跟以前的自己不同,否定自己以前的想法.

我也是小时候那个自己,比如我要是很喜欢吃,可能喜欢吃的东西变了,但是我还是喜欢吃.

说起永生,或者长生不老, 我如果能把自己的记忆复制一份,放到另一个身体里,那我算是永生了嘛? 可是明明这样操作有两个我的记忆同时存在,然后我会看着一个跟我有着一样记忆的人继续活下去,而我却要继续面对躯体的死亡? 这应该不是真正期待的永生,而真正期待的永生其实是同一个躯体继续下去,老而不衰?

但这种理论也不唯一, lp说这取决于你是相信哲学里哪个流派,你相信灵魂的存在嘛?还是不相信? 假如相信有灵魂,那么灵魂可以脱离肉体存在,只要灵魂不灭,人就永恒.但是记忆或许就不是必须品了, 跟肉体一样, 所以这样的永生好像也无所谓,死了,跟着这个肉体的记忆全忘了,转世投胎到另一个新的身体,可能还是原来的性格,但是不同的面貌,可能身体残废了,性别变了,糟糕,这么想好像没有一位唯一灵魂的标识物了,本来想用性格的,但是要是真残废了说不定性格也偏激了呢…

估计, 大部分期望的永生,还是自己现在的记忆,肉体永存吧

个人愚见的因材施教

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所谓的因材施教,应该也可以理解成,在人基数够用的情况下,钱够用的情况下,多投资几个学生,哪个人能成才其实还是要靠他自己努力,通过概率上的扩大分母,即使在成功率很小的前提下,也能保证有一定的学生成功,比如,想出新想法的学生可能占所有学生比例是1%,那么,就需要有100个学生来培养,然后从中找出那么一两个有可能想出新idea的学生,如果是千分之一,就需要1000个学生,不管是1%还是1/1000,对于博士项目而言,都不可能有那么多钱,所以需要有研究型硕士项目,让学生自费搞科研,有潜质的加以培养,没有的毕业就走,有些没有什么素质的学校,还可以在第一年不给Phd学生任何经济资助.当然,也有给了phd经济资助也不能成功,然后停止资助的.

相对应的有教无类,所谓有觉(教)可以睡就不会累(类),呵呵,就压根不在乎学生有没有什么天赋,也不在乎天赋,用类似填鸭式的教学,把学生教会了,考试过了就行. 工业化的教育就像产品生产一样,本身就不应该指望生产出个性化的商品,而是大量同质化的产品.

静下心来慢慢走路

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最近一直处在一种自责中,在新的时候看似很风光从学校跳出来,拿到了比在学校里多的钱,实际上却亏的更多,特别是听到yuan说他最后几年在学校读博士有七八k的时候,我那个时候还只有4K,还有之前听学校一phd女生说她lg在ibm当小manager一个月也有接近10K的时候,还有要离开新加坡之前那个老乡叔叔也说我赚的太少,待四年永居没申请下来,以及后来想回来,前同事问我hw有没有给到超过10K一个月的时候,我都觉得,怎么比我预想的要高那么多。于是就开始各种思考自己是不是做错了什么,错过了什么机会,羡慕别人好像做的比自己更好的决定,比如读博士,比如在一个地方一直待着。

说真的,过去自己做事情的方式还真是极端而奇怪,为什么会那么觉得,也是因为结婚以后思路好像变了,原先可能想的是能不能暴富,结果活的年岁越多,越发觉得这个世界不简单,觉得自己以前只是急着从一个坑跳到另一个坑,却从来没想过每个坑都是不好的坑,别人从我这儿得到了什么,自己失去了什么,所谓的机会成本没抓住,最后也算是被人利用吧。

所幸胡搞乱搞,自己想做的事情似乎是都做成了?当年是自己想出来,拦都拦不住,本来有保研名额,而且还在国内一个很好的地方实习,在ntu的时候也拦不住要跑出来工作,学位都没好好读,工作拿着那么低的工资还有当地社团支持也不要,非要跑到美国来看看,那么能不能说,其实如果想法对了,后面几年按照现在的想法一步一个脚印往前走,虽然慢一点,但是做事情能更有把握?

有关诈骗电话你有一封来自中国领事馆的重要邮件

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希望中国骗子不要再给中国人丢脸,也希望大家都好好去了解这个世界,不要太高傲了.

早上到公司之后,突然有一个印度女同事提到Chinese这个词,才发现公司里电话一个接一个的响起,因为公司电话都是同样的前置号码,所以明显就是扫号行为.内容你看标题就知道了,就是谎称你有一封来自中国领事馆的重要邮件.

于是在一阵接一阵的电话声中, 我的法国老板跟几个印度还有美国同事开始嘲笑这个奇怪的中国诈骗电话,虽然他们什么都听不懂,但是他们知道这是中文.然后开始拿这个中国诈骗电话打趣.

我当时真的很无语,有一种非常弱势的感觉.想象一下,如果你在中国,接到这样的电话,你只会说这是骗子的电话.但是到了美国,这就变成中国人的电话了,甚至连诈骗,骗子这种词都省略了. 退一步讲, 假使你接到一个英语的诈骗电话, 你也只会说这个是诈骗电话,而不会说这个是印度人的诈骗电话,或者法国人的诈骗电话.

这种感觉,也就只有当人弱势的时候才能体会到.当年我在新加坡的时候,一个马来华人同事跟我们几个吃饭的时候打趣到说整个樟宜工业园都快变成Chennai工业园了. 我当时并不明白其中的含义,直到后来我去美国之后跟我之前在新加坡同一个公司就认识的印度同事聊起这个事,被他狠狠瞪了以后,我才意识到这件事有多么伤人. 在华人社会比如新加坡,华人是绝对主力,然而在美国,我们不仅不如黑人,可能连印度人都快不如了.

我老板以及同事显然没有意识到这个层次,我只是提醒他们,我刚才跟骗子说,请他们不要再打过来了,你们让所有在这个公司的中国人感觉羞耻.

在我的反馈下,过了十分钟之后,所有电话一起响了起来,这回诈骗电话前面加了一个英文开头this is bank of america, you have a …..

F1 student/nonimmigrant alien at US own gun at Texas

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This is some information I find online regarding how an non-immigrant F1 visa students at US can legally own a gun at Texas, USA.

May a nonimmigrant alien who has been admitted to the United States under a nonimmigrant visa possess a firearm or ammunition in the United States?

An alien admitted to the United States under a nonimmigrant visa is prohibited from shipping, transporting, receiving, or possessing a firearm or ammunition unless the alien falls within one of the exceptions provided in 18 U.S.C. 922(y)(2), such as: a valid hunting license or permit, admitted for lawful hunting or sporting purposes, certain official representatives of a foreign government, or a foreign law enforcement officer of a friendly foreign government entering the United States on official law enforcement business.

[18 U.S.C. 922(g)(5)(B) and 922(y)(2); 27 CFR 478.11 and 478.32]

Last Reviewed June 7, 2016

https://www.atf.gov/firearms/qa/may-nonimmigrant-alien-who-has-been-admitted-united-states-under-nonimmigrant-visa

Can an alien who enters the United States on a nonimmigrant alien visa rent a firearm for lawful hunting or sporting purposes while in the United States?

A nonimmigrant alien that possess a valid hunting license from a State within the United States or falls within any of the other exceptions or exemptions that allow nonimmigrant aliens to possess firearms may rent firearms to hunt or to use at a shooting range.

[18 U.S.C. 922(a)(5) and (9), 922(g)(5)(B) and 922(y); 27 CFR 478.99(a) and (c)(5)]

Last Reviewed September 15, 2015

https://www.atf.gov/firearms/qa/can-alien-who-enters-united-states-nonimmigrant-alien-visa-rent-firearm-lawful-hunting

Someone send e-mail asking ATF for more information and I listed them below.

https://www.mitbbs.com/article_t2/GunsAndGears/31843411.html

Q1: For example, one such non-immigrant alien was holding a valid hunting
license when he purchased a firearm through an FFL. But later on he didn’t
renew the hunting license when it expired and now he is not in possession of
any valid hunting license. He also does not fall in any other exceptions
stipulated under 922(y). My question is, is he now in violation of 922(g)(5)
(B) and illegally possessing the firearm he legally purchased previously?

A:  The definition of a for a Hunting license or permit lawfully issued in
the United States is found in 27 CFR 478.11 (*note 1) which states, in part: A
license or permit issued by a State for hunting which is valid and unexpired
.  Accordingly, the license or permit or permit must remain valid and
unexpired to possess such firearm after acquisition.

Q2: Does the definition of “possession” in 922(g)(5)(B) also include non-
immigrant alien such as foreign tourist renting/shooting firearms in a
commercial or private target range?

A:  922(g)(5)(B) pertains to only to nonimmigrant aliens admitted to the
United States on a nonimmigrant visa.  It does not apply to other lawfully
admitted nonimmigrants who were not admitted on a nonimmigrant visa (i.e.,
visa waiver nonimmigrants, Canadian citizens not requiring a nonimmigrant
visa, etc.).  Please see Page 2 of the March 2013 Newsletter (*note 2) which has
relevant information pertaining to rental of firearms at shooting ranges.

In addition, there may be State laws that pertain to this proposed activity.
Contact State Police units or the office of your State Attorney General (
http://www.naag.org) for information on any such requirements.

We trust the foregoing has been responsive to your inquiry. Should you have
additional questions, please contact your local ATF office. A listing of ATF
office phone numbers can be found at: https://www.atf.gov/contact/atf-field
-divisions.

Regards,

L. Babbie | Firearms Enforcement Specialist
U.S. Department of Justice | Bureau of Alcohol, Tobacco, Firearms and
Explosives

Firearms Industry Programs Branch
99 New York Avenue NE, Mail Stop 6.N-518
Washington, DC 20226

*note 1: 27 CFR 478.11 – Meaning of Terms.
https://www.law.cornell.edu/cfr/text/27/478.11

*note 2:ATF FFL Newsletter, March 2013
https://tinyurl.com/lrrhdj3

Steps that Texas Residents obtain a hunting license.

1. approaches to buy hunting license (https://tpwd.texas.gov/business/licenses/online_sales/     Resident Hunting (*note 3))

2. take hunting education (https://tpwd.texas.gov/education/hunter-education  3 options to choose)
3. renew hunting license every year around 31 Aug (*note 4)
*note3 : A RESIDENT is a person who has lived continuously in Texas for more than six months immediately before applying for a license.
*note 4 : Generally, fishing and hunting licenses and endorsements are valid from the date of sale through August 31 of the same year. Temporary hunting and fishing licenses and packages, Year-from-Purchase fishing licenses and Lake Texoma fishing licenses have different expiration dates.

 

same 1080P Camera but total differnt video quality

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I bought a dash cam with 1080P resolution (1920 x 1080) for my vehicle and later I think a glass cam will be helpful for video recording, so i bought another glass cam, but even though it’s the same 1920 x 1080 resolution, the video quality is much worse (though file size is similar at 2Mbyte per second, I have not figured out the math about file size exactly, I will talk about it later)

Here is the video screen shot of mini 0906 with 1080P 30fps front camera.

Here is the screen shot of glass camera with 1080P and 30fps.

Why the same 1080P has so huge video quality difference?

About recording file size, 1920 x 1080 = 2073600 Pixels, if each pixels need 8 bits for White/Black, 8 bits represents 28 = 256 tonal levels (0-255) and  24 bits (3 bytes)  for a color image, which is this case. Considering the frame rate is 30fps, which means 30 images per seconds, then the total data amount is 2Meg  x 24 x 30 /8 = 180 Mega Bytes per seconds, after video compression algorithm, the actual file size is around 600Megabytes per 5 minutes, which is 2 MegaBytes per seconds only.

Based on file name extension, the dash cam with better video quality is ended with .MOV, which supports H.264 compression etc while the galss cam uses .avi which is obsolote and uncompressed video quality. So I am not sure if the video recorded from glass cam is really 1080P, maybe not real 1080P based on the video quality.

 

想到自己以前特别惨

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突然想到过去的一些事情,比如考完TOEFL以后自己一个人去爬长城,一个人吭哧吭哧的跑去北京某个大型公交站坐车开去长城,然后一个人爬完高高的城墙,看着城墙上人山人海,有很多穿的很时尚的人,辣眼睛,然后再看看自己,为了考TOEFL把自己整的特别颓废,大学期间也是脑残从来没认真想过要谈个女朋友什么的,好像总觉得自己当时特别惨,自己都看不起自己。然后还有准备一个去紫荆城,都走出校门要到公交车站了,又觉得无聊走了回来…现在想想,都觉得自己好傻,好可怜

还有高中的那些破事。

我觉得是自己把自己搞的那么惨吧,不知道那个时候脑子怎么想的。

现在也还是,我为什么总是活得那么痛苦….好像不痛苦的人生我就不知道如何过了,还是说是因为高中那两年太痛苦了,觉得不痛苦就会倒霉,所以一直把自己往苦海里推,怎么痛苦怎么来?压根就不相信有人会喜欢你,也不相信很多美好的感情。

可是后来在新加坡也还是遇到很多难受的事情,我觉得吧,自己心态有问题,好像总是记得那些不愉快的事情。其实去了新加坡以后人生就有好多快乐的事情了,比如对我特别好的朋友,老乡。大学的时候也有遇到对我很好的人,只是我总是末敏其妙的没有去珍惜,直到失去才追悔莫及,人身最大的痛苦莫过于此。我不是至尊宝孙悟空,没有月光宝盒也没有七彩祥云,我能做的只有珍惜眼前那些对我好的人,然后忘掉过去

About Exchange Rate in US (GBP as example)

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Travel outside US

Because I need to travel to UK in a few weeks and I spent some time to study the exchange rate at US. Unlike Singapore, US doesn’t have a lot of exchange firms. But Singapore and Europe have a lot of those types of companies.

The ultimate conclusion is to apply a master credit card which doesn’t charge foreign transaction fee. Like the HSBC Cash Reward Credit Card. (https://www.us.hsbc.com/credit-cards/products/platinum-rewards/)

If you think my conclusion is wrong, please don’t hesitate to comment below. I find the same conclusion from TripAdvisor, but they just don’t give me a reason, so I have to dig them out here.

Why not Visa Credit Card?

Because visa credit card exchange rate is worse compared with master. You can try it with the link below. I tried to upload my own pictures but it doesn’t work well. For GBP in visa website, choose GIP (Gibraltar Pound, it has the same rate as GBP, don’t know why visa doesn’t have the option of GBP)

Check the below weblink from Master and calculate the rate:
https://www.mastercard.us/en-us/consumers/get-support/convert-currency.html

Check the below weblink from Master and calculate the rate:
https://usa.visa.com/support/consumer/travel-support/exchange-rate-calculator.html/

Why not exchange firm at UK?

The best available rate on-line that I can find is from Thomas exchange global, their USD buying rate is 1.38504, which is still worse than visa and master card. But to use credit card, you need to have no foreign transaction fee (3% normally). (Visa for GBP to USD is 1.361 and master card is 1.3606)

The link below is their website, they have many branches in London.

https://www.thomasexchangeglobal.co.uk/exchange-rates-check-exchange-rates.php

There is another one who has a similar name called Thomas Exchange UK, which is totally different from thomas exchange global. I have e-mailed them to confirm. The reason why I mentioned it is because when I google search for thomas exchange near Londong’s King Crossing Station, there is one exchange branch located there and which belong to thomas exchange UK, not global. The address is

25 Euston Rd, Kings Cross, London NW1 2SD, UK

Their online rate is 1.3875 for buying GBP via USD from them, which is worse than Thomas exchange global. I didn’t try exchange from it yet.

https://www.thomasexchange.co.uk/buyback.asp

Why not exchange in US

Best rate I find is Wells Fargo, which offer me 1.4198 USD = 1 GBP. I tried Chase and Bank of America, you can try other bank’s calculator. I need to prepare some cash in hand before I fly there.

In a summary, to buy the same 1 Britain Pound, master card allow me to pay the minimum today as 1.3606 if my master credit card has no foreign transaction fee.

  • Way to Pay                                        USD to pay for 1 GBP
  • Master Card                                            1.3606
  • Visa Card                                                 1.361
  • Exchange at UK from USD                   1.385 (lowest I find)
  • Exchange at US for GBP                       1.4198 (Wells Fargo, lowest I find)

Different Situation

I once also tried to exchange all my SGD to USD because I am not travelling that time, but move all my asset to US for my study. I am not financial major and also don’t have a lot of money to exchange, so I just look for different bank exchange rate at Singapore and choose the lowest one, I remember UOB offers the lowest. But I believe there must be some better way to exchange currency, maybe bitcoin. Let me know your opinion.

Hello, World, again

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世界你好, again

明天就要重新开始朝九晚五的工作生活了。这过去的三年,学会了做饭,学会了照顾别人,有了女朋友,终于找到了自己想要的工作。然而在这个时间转换点上,我却打不起精神来。我回想起自己的人生,可曾对这个世界有何贡献?好像一直都还是一个平庸的人。这应该就是下一步要做的事情吧。sijin在这点上就是我的榜样,她真的投身到了一个未知的世界里。我周围的很多东西都是已知的,就连过去几年的生活,现在回想起来,都是瞎折腾什么劲啊。

然后对于自身的欲望,应该多加锻炼身体,在引体向上这个运动上有所突破. 看看下面这个小视频,你就知道我对自己的期待了。

Olympic single bar Pull Up

目前住在Austin的学生公寓里,这里一切都好,该有的都有了。只是学习的动力和环境还是缺失了一些。不想花钱学习,即使去starbuck买杯饮料都不想。在家也学不进去,这个心态实在是太奇怪了。可能真的是被穷疯了吧,希望工作几周拿到工资以后情况能有所好转。有一堆东西想买买买……

Opportunity 机遇

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美国有好多机会,只要我努力去争取。不应该期待一次成功,成功都是建立在失败上的。

P导师组里的那个印度人硕士原来早就退出了。因为他觉得跟着P教授学不到什么东西。他现在在Intel实习,做serdes。(Update: 后来发现不是同一个印度人,是另外一个印度人。Abinav后来跟我一起面试的南加州的一家公司,多亏了那晚上的聊天,他真的是超厉害,我实在是太菜了,还有好多需要学习的,虽然我们两个最后都没有拿到那家公司的offer,但是我很感激那晚他对我的帮助。)

N公司的集成电路设计组招了我们学校TAMU的MEng硕士,那个硕士的实力真的很强。他没有读Master of Science也可以通过实习得到电路设计的机会。

最近我面试了很多公司,厉害的组还是要招有设计经验的人,我只能取巧看能不能找到一个要求不是那么高的电路设计初级职位。

以前公司里有个印度实习生,跑到每个组里要活干,然后没有什么好学的就跑开,我那个时候特别讨厌他那样,怎么可以一点忠诚度都没有。我现在觉得这才是美式社会的思维方式。而我还是那个中国人,还是yan同学思路比较好。本来很多时候就是没有机会,谈所谓的忠诚,只是把问题扔给别人解决,我应该自己为自己的人生负责,中国式思维害死人。这些东西在美国不适用。

现在回头看十月份写的那篇博客,其实那个时候正确的做法应该是马上疯狂的投实习,看能不能找到2017 spring的实习机会,然后跳出去。