今是昨非

2009/11/25

Steve Jobs的CV裏有一句超型:I’m not afraid to start from the beginning。

經濟學101教人,過去的是sunk cost,當下應考慮的,是將來。

小王子卻說:你在你的玫瑰花所花的時間,使你的玫瑰花變得那麼美麗。

今年三月初,我把花了一年時間用python寫長達三萬行的系統丟棄掉,從新用C++由零開始把一切重寫,至昨天晚上,系統已近六萬行。新系統比舊的快了超過一百倍,retrospective地想,把系統推倒重來的決定對極了。

早前跟老細討論博士論文提目。應該繼續手上半熟的東西,還是選新題目。手上的,是兩年時間的結晶,不過有點雞肋,雖然理論模型美麗,不過it doesn’t scale,世界不會因它而變得美麗。如果選新題目,做兩三年,一切都是未知,未必有這樣好的結果。於是,我選了雞肋。

有時覺得自己常貪戀在comfort zone裏,因著些歷史的偶然我開始玩電腦,十二年來斷估儲夠一萬小時,享受著早著先機的優勢,不多花力就能贏普通人。一旦離開了comfort zone,就像上大學時竟選了政政系,發覺原來世上其他地方還有很多勁人,遲了起步原來是多麼痛苦,start from the beginning原來很難,於是又逃回comfort zone裏。

時常問自己,每一個我所作過的決擇,是否最好的?這個問題多舊魚,一日未死一日都未知。

如果當下覺今是而昨非,我又有沒有把一切推倒重來的勇氣?

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11 回應 to “今是昨非”

  1. Dra Says:

    有聽過(國際象棋)"棄后的時候"嗎?

  2. 老麥 Says:

    我都鐘意重頭寫,最恨執人舊code。做engineering 最享受就是創造的快感,不是嗎?

    推倒重來,等於自廢武功、重新擔水、學另一套武功去打,一定是捱打。但難度是次要,由低做起的心理壓力,權力盡喪的無力感,才是大折磨。

    我也中途出家兩次,如果你想轉行,又要有咁上下成就,兩次應該是極限 — 除非你未轉行時已 multi-threading。

    政政…估你唔到!

  3. kklo Says:

    舊 code 的確係越睇越眼怨 =p

    愈泥足深陷,推倒重來的機會成本亦愈大,所以經濟學 101 也說學歷(專業)愈高,職業流動性也就愈低

    >>>時常問自己,每一個我所作過的決擇,是否最好的?
    至少在你下決擇之時,就你當時所知的,應該已經是最好,除非閣下是在擲骰子

  4. Random Coil Says:

    I am a computer illiterate, so I know nothing about code. But 做engineering, I enjoy building everything from stretched. The process of learning and building is exciting.

    I can understand the idea and benefit of staying in the comfort zone. Yet, staying in the comfort zone always means losing the chance of seeing something bigger and better…

    No guts no glory man…

    P.S. I love changes… But I do agree that you probably can’t have major changes in your career more than twice…

  5. 五點 Says:

    It doesn’t really matter.

  6. Leon Says:

    人生的長度不足以讓很多事推倒重來

    認字特警:係"重新",唔係"從新",係"題目",唔係"提目"

  7. leona Says:

    Let go的重要性不下於「堅持不懈」呀!

  8. Sam Says:

    “如果當下覺今是而昨非,我又有沒有把一切推倒重來的勇氣"

    That is great question to ask.

    You have to ascertain what the problem is first – is it strategic or operational? It saves you a lot of headaches.

  9. Sam Says:

    “時常問自己,每一個我所作過的決擇,是否最好的?"

    If you measure it by money, than I guess we would have to use ‘Total Lifetime Income’ as the metrics.

    • Justin Says:

      I don’t really care much about money, coz I don’t spend a lot of $$$.

      I like running and hiking and reading, all cost very little.

      I know that I can earn enough to feed myself and my family.

      I am just thinking about, how can I make myself and ppl close to me happiest.

  10. Justin Says:

    Dra:
    棄后,高人才敢做。

    老麥:
    我ok肯定以自己的能力,係最應該做電腦的。只係,未肯定電腦裏面做邊範啫。

    kk:
    最好,也有分short-term interest同long-term interest的。
    如果真的能optimize long term interest,我會考前就唔會日日落機鋪打機。

    Random Coil:
    Yes. I am trying to tell myself that, comfort zone is not necessary a good place for a young people like me. I hope I can make up my mind.

    五點:
    The first step of change is always difficult.

    Leon:
    thx!!! My chinese is getting worse!

    Leona:
    對對對。努力中。

    Sam:
    Haha, the problem you stated is difficult enough!


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