Mount Foo的日记

Main: (R) Linear methods & Hypothesis testing Interesting topics of - M. Sipser - "Theory of Computation" Arguments in - J. Stuart Mill - "On Liberty & Utilitarianism" Nov 30 a.m.: Knapsack Cryptosystem, Martin Hellman. SAT to 3SAT. Implication of Sa......

Let every action be with a strong cause; every cause, a strong consequence. Words are words as sealed pact. No effort ever more wasted. Never have to regret. Everything, Truly.

从字面看，普世价值必须是对所有人的价值，而不是某一阶层，某一部分人的价值。 假设所有人分为A,B两组，v(A), v(B)分别为他们独立接受的某两种价值。A组人认为B组人应该认可v(A)，或者A组人相信B组人最终会认可v(A)，或者A组人利用其他外界力量使B组人接受了v(A)，都不足以使v(A)成为普世价值。 即使v(A)是真正的普世价......

对意义的评价，需要一个系统。通常需要对其他“善”的指称。而被大家乐于称道的意义，大多是Bullshit。如何确立这样一个系统，或者来说明不存在这样的系统，是个有意思的问题。

关于“只可意会，不可言传”的神秘之物： 按照L.W.在《逻辑哲学论》中的看法，一个语句只有对世界有所摹画才是有意义的语句。实证科学是对世界的摹画而哲学不是。那么哲学命题的意义在于什么？从根本上哲学、伦理学、美学，都不摹画世界，它们关心的诸如生命的意義问题，都是事实之外的东西。事实领域的界限也就是可说者的......

When a word is defined in a certain language, it refers to something in our mind. The definition gets accepted by all until there is consensus, ideally. Practically there is never consensus of everybody. That's why there are religions. Even there is consensus, it could be a consensus of stupidity, r......

Mathematics provides concrete tools, as abstractions of reasoning, on the properties of and connections between objects. It nurtures and booms almost all the fields of study that appeal to rigor, some departments in arts as well. With developments in mathematics and natural sciences, notorious metap......

Set theory & Logic Measure theory Relativity and quantum mechanics Computational complexity theory