65 Matching Annotations
  1. Apr 2026
    1. Arbitrageur: Knows pₜ. Sweeps every resting ask below pₜ and every resting bid above pₜ. Infinite capital, never rests orders.

      这段描述精确地定义了套利者的行为模式,突显了其完全信息和无限资本的优势。它强调了套利者如何利用过时的报价,以及为什么做市商需要管理报价的时效性以避免被套利。

    2. Competitor: Static hidden-liquidity ladder. Quotes every tick outside its spread with fixed notional. Refills consumed levels at a fixed offset next step. Never re-centers.

      这段描述精确地定义了竞争对手的行为模式,强调了其静态特性。它突显了竞争对手的局限性:不重新居中,不适应市场条件,这为适应性策略提供了明确的竞争优势来源。

    3. You quote before the next price move, so you are always exposed to adverse selection.

      这句话精准地捕捉了做市商面临的核心困境:必须在价格变动前报价,从而面临逆向选择风险。这一洞见揭示了预测市场挑战的本质结构,以及为什么适应性策略如此重要。

    4. Retail fills generate positive edge (you captured the spread). Arb fills generate negative edge (the arbitrageur took stale quotes).

      这一简洁对比揭示了做市商面临的双面性:从零售交易中获利,却遭受套利者的损失。它清晰地区分了两种交易对手及其对策略的影响,强调了识别和管理不同类型订单流的重要性。

    5. Your advantage comes from adapting to market conditions it ignores.

      这句话精炼地概括了整个预测市场挑战的核心策略思想。静态竞争对手的局限性(不重新锚定公平价值,不反应跳跃)为适应性策略创造了机会,强调了在市场中灵活调整的重要性。

  2. Sep 2025
    1. theories of consciousness

      are like - toothbrushes.

      Everyone has one

      • but no one
      • wants to use another one's.

      Yeah, it's such a glorious metaphor and

      that that's true when I read it and it's more true now.

  3. Jan 2025
  4. Nov 2023
    1. 最近,我教過的學生們,有幾位開始變成中小學老師。這些同學們在我的課堂上到課率很低。我一直都不想去要求學生來上課,因為我自己當年到課率也是超低。所以我很早就用網路教學,一開始是用 YouTube 錄影後上傳,後來變直播,現在則改用 facebook 直播。奇特的是,他們說受我影響很深,教學的方法與理念都從我這裡獲益良多 ....這讓我想起一句話:If you would like to be good at something, teach it !

      If you would like to be good at something, teach it.

  5. Oct 2023
  6. Mar 2023
  7. Feb 2023
    1. the manner in which knowledge is acquired, communicated and shared is internal to the nature of knowledge itself, and that the metaphysics of personhood needs to countenance the formation of reason if we are to understand how rationality and animality are united in the human person.
      • = quotable
      • the manner in which knowledge is acquired, communicated and shared is internal to the nature of knowledge itself
  8. Jan 2023
    1. while I was listening to all of you and to our wonderful scientists 00:57:28 I thought of something that the distinguished physicist Freeman Dyson wrote shortly before he died he said he believed that 00:57:40 the speed of cultural Evolution the speed of cultural evolution is now faster than the speed of biological evolution so 00:57:53 what does that mean to me it's something very simple it means that we now hold our destiny in our hands and that's what you're all talking about

      !- quotable : Freeman Dyson - the speed of cultural evolution is now faster than the speed of biological evolution - references on the speed of cultural evolution: https://jonudell.info/h/facet/?user=stopresetgo&max=50&any=Cultural+evolution - Freeman Dyson essay on biological and cultural evolution: https://hyp.is/go?url=https%3A%2F%2Fviahtml.hypothes.is%2Fconversation%2Ffreeman_dyson-biological-and-cultural-evolution&group=world

    2. 00:40:20 Line that the astronauts bring back in their pictures from space that's the that's the part of the atmosphere that has oxygen the troposphere uh and it's 00:40:32 only five to seven kilometers thick that's what we're using as an open sewer if you could drive a car straight up in the air at interstate highway speeds you get to the top of that blue line in five minutes and all the greenhouse gas 00:40:46 pollution would be below you we're still putting 162 million tons into it every single day and the accumulated amount is now trapping as much extra heat as would be released by 600 00:40:58 000 Hiroshima class atomic bombs exploding every single day on the earth that's what's boiling the oceans creating these atmospheric rivers and the rain bombs and sucking the moisture out of the land and creating the 00:41:10 droughts and melting the ice and raising the sea level and causing these waves of climate refugees predicted to reach 1 billion in this Century look at the xenophobia and political authoritarian 00:41:22 trends that have come from just a few million refugees what about a billion we would lose our capacity for self-governance on this world

      !- quotable : Al Gore

    3. if we continue with our greenhouse gas emissions then by 2070 as many as 3 00:03:25 billion people will live in uninhabitable zones and mostly in poorer countries and this basically means that these people who probably have the least contribution to the climate problem have 00:03:39 been the ones that are most exposed

      !- quotable : 3 billion people at risk by 2070 - mostly people who has contributed the least to the problem

    1. As a result of cultural evolution, a single species now dominates the ecology of our planet, and cultural evolution will dominate the future of life so long as any species with a living culture survives. When we look ahead to imagine possible futures for our descendants, cultural evolution must be our dominant concern. But biological evolution has not stopped and will not stop. As cultural evolution races ahead like a hare, biological evolution will continue its slow tortoise crawl to shape our destiny.

      !- quotable : Cultural Evolution

    1. new way of seeing could lead to loss of dignity, oppression, and even greater inequality; there are many historical examples of that.[10] But there is also the open horizon of new ways of being that are more humane, more authentic, more just. This horizon is what political theorist William Connolly refers to when he says: “Today perhaps it is wise to try to transfigure the old humanisms that have played important roles in Euro-American states into multiple affirmations of entangled humanism in a fragile world.”[11]

      !- quotable : William Connolly !- comment - Deep Humanity?

  9. Dec 2022
  10. Sep 2022
  11. Jun 2021
  12. Apr 2021
  13. Mar 2021
  14. Feb 2021
  15. Dec 2020
  16. Nov 2020
  17. Oct 2020
  18. Sep 2020
  19. Jul 2020
  20. May 2020
  21. Feb 2020
  22. Nov 2019
  23. Oct 2019
  24. Sep 2019
  25. Jun 2019
  26. Dec 2018
    1. Going to political protests is hopepunk. Calling your senators is hopepunk. But crying is also hopepunk, because crying means you still have feelings, and feelings are how you know you’re alive. The 1% doesn’t want you to have feelings, they just want you to feel resigned.
  27. May 2014
    1. “I want to inspire (young) people…” People are inspired by what you do in your own life, not by what you tell them to do. Do not set out to inspire someone else, set out to make a difference in the world. Your journey may end up being inspirational to others, young and old.

      Wow. Extremely well said. I wish more people understood this.

  28. Feb 2014
    1. Ideas are viral, they couple with other ideas, change shape, and migrate into unfamiliar territories. The intellectual property regime restricts the promiscuity of ideas and traps them in artificial enclosures, extracting exclusive benefits from their ownership and control. Intellectual property is fraud - a legal privilege to falsely represent oneself as the sole “owner” of an idea, expression or technique and to charge a tax to all who want to perceive, express or apply this “property” in their own production. It is not plagiarism that dispossesses an “owner” of the use of an idea; it is intellectual property, backed by the invasive violence of the state, that dispossesses everyone else from using their common culture. The basis for this dispossession is the legal fiction of the author as a sovereign individual who creates original works out of the wellspring of his imagination and thus has a natural and exclusive right to ownership. Foucault unmasked authorship as a functional principle that impedes the free circulation, the free manipulation, the free composition, decomposition, and recomposition of knowledge. The author-function represents a form of despotism over the proliferation of ideas. The effects of this despotism, and of the system of intellectual property that it shelters and preserves, is that it robs us of our cultural memory, censors our words, and chains our imagination to the law.

      a+

    2. And yet artists continue to be flattered by their association with this myth of the creative genius, turning a blind eye to how it is used to justify their exploitation and expand the privilege of the property owning elite. Copyright pits author against author in a war of competition for originality – its effects are not only economic, it also naturalizes a certain process of knowledge production, delegitimates the notion of a common culture, and cripples social relations. Artists are not encouraged to share their thoughts, expressions and works or to contribute to a common pool of creativity. Instead, they jealously guard their “property” from others, who they view as potential competitors, spies and thieves lying in wait to snatch and defile their original ideas. This is a vision of the art world created in capitalism’s own image, whose ultimate aim is to make it possible for corporations to appropriate the alienated products of its intellectual workers.

      a+