“《超越学科的认知基础》2015秋楚悦晨学习报告-第九周”版本间的差异
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## Coupled | ## Coupled | ||
# Information Axiom: minimize the informational content of a design (or maximize the probability of successful design) | # Information Axiom: minimize the informational content of a design (or maximize the probability of successful design) | ||
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| + | Entropy：H =∑（-Pi log2 Pi） | ||
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| + | This formula is exactly the same as the formula of Shannon index in calculation of biological diversity index. that means that the biodiversity to a environment is just like the information carried by a system. That's a structural metaphor.This is very interesting because according to this formula, the more entropy in a system, the more information the system can carry. We love informational complications and diversity in most of the times, but we hate entropy for it lowers the quality of energy. So is entropy all that bad? I believe not. More entropy usually means more possibility and more stability, especially in biological studies. We love DNA because it can carry large amount of information, and we love biodiversity because the gene bool is more rich and the ecological system is more stable. On contrary, we hate entropy in our bodies, for the chaos could kill us. So we eat and gain energy to remain low entropy level. Well, are we talking the same thing when we're talking about [https://en.wikipedia.org/wiki/Entropy_(information_theory) informational entropy] and [https://en.wikipedia.org/wiki/Entropy thermodynamic entropy]? | ||
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===30年前，30年后=== | ===30年前，30年后=== | ||
| + | 30年前，人们认为触摸屏是非常愚蠢的，甚至有人专门写论文来批判这种想法，诸如“手指会挡住屏幕”这种奇葩的论点都会大行其道。我们不怪他们，毕竟他们无法感受到三十年后的世界。可是，我们的三十年后又会是什么样子呢？MIT教授[https://en.wikipedia.org/wiki/Nicholas_Negroponte Nicholas Negroponte]认为，30年后我们只需要吃下一颗小小的药丸，就能获得所需要的知识。感觉真的很酷，但是忍不住质疑：如何让一个分子足够小到可以通过血脑屏障，同时足够复杂到可以携带庞大的信息？而且它还既能扛得住消化液和强酸，又能被大脑轻易接受和理解。感觉还是古老的电信号靠谱一点呢，比方说一摸电极就能传输信息什么的。 | ||
===世界的维度？=== | ===世界的维度？=== | ||
==参考文献== | ==参考文献== | ||
2015年11月17日 (二) 18:51的版本
标题
关键词
S-Curve，Moore's law，paradigm shift，TRIZ，Axiomatic design，Axiom，学校，序（Order），信息，香农-维纳指数
正文
Axioms
There are two axioms in the theory of axiomatic design.
- Independence Axiom: maintain the independence of functional requirements (FRs)
- Uncoupled
- Decoupled
- Coupled
- Information Axiom: minimize the informational content of a design (or maximize the probability of successful design)
Entropy：H =∑（-Pi log2 Pi）
This formula is exactly the same as the formula of Shannon index in calculation of biological diversity index. that means that the biodiversity to a environment is just like the information carried by a system. That's a structural metaphor.This is very interesting because according to this formula, the more entropy in a system, the more information the system can carry. We love informational complications and diversity in most of the times, but we hate entropy for it lowers the quality of energy. So is entropy all that bad? I believe not. More entropy usually means more possibility and more stability, especially in biological studies. We love DNA because it can carry large amount of information, and we love biodiversity because the gene bool is more rich and the ecological system is more stable. On contrary, we hate entropy in our bodies, for the chaos could kill us. So we eat and gain energy to remain low entropy level. Well, are we talking the same thing when we're talking about informational entropy and thermodynamic entropy?
30年前，30年后
30年前，人们认为触摸屏是非常愚蠢的，甚至有人专门写论文来批判这种想法，诸如“手指会挡住屏幕”这种奇葩的论点都会大行其道。我们不怪他们，毕竟他们无法感受到三十年后的世界。可是，我们的三十年后又会是什么样子呢？MIT教授Nicholas Negroponte认为，30年后我们只需要吃下一颗小小的药丸，就能获得所需要的知识。感觉真的很酷，但是忍不住质疑：如何让一个分子足够小到可以通过血脑屏障，同时足够复杂到可以携带庞大的信息？而且它还既能扛得住消化液和强酸，又能被大脑轻易接受和理解。感觉还是古老的电信号靠谱一点呢，比方说一摸电极就能传输信息什么的。
