Xin > Recent Status Updates

I don't have to write something, do I?

Wow.
I've saw this before, but seeing it again gives the same feeling.
Fireheart has become Firestar, though prophecy never stops coming.
Keep going.

Let me complete what I've missed lol
This chapter has been too practical, which makes people feel like math expressions are just harder, less explicit and intuitive. It insists the explicitness of programming languages and denies the explicitness of math expressions, hell But that isn't how math works. Programming languages seem more explicit, but math expressions are, too.

Interesting.
Although I've already known 80% of this chapter, it works well. I did feel difficult when learning mathematics, though they are fun at the mean time. I can endure it of course, but apparently not everyone does. It provides a really practical introduction to "practical" mathematics. And I think I'd also be convinced if I were a beginner.
But there's a problem, not enough space here tho
Overall it's good.

Wow, the Foundation is nearly falling.

I know it. They fail because of their pride. They believe in Seldon, assuming him to predict everything.

But the Mule is the added feature, he's the unpredicted factor.

Well, I think it's the time, where's the Second Foundation?

Damn.

So hard, I don't get it bro, wtf things are getting less obvious. So many words and equations.

Rereading the entire chapter might help I suppose.

Interesting.

This chapter has basically given an overall impression on classical cryptography.

And btw, it seems like the study of modern cryptography also requires explicit definitions and proof, which is pretty normal—cryptography is mathematical, after all.

Just the basics, not hard.

I started reading it this morning. Although it's a textbook, it's pretty easy to understand and I think it's perfect to read it just for fun.

Btw Jonathan, your daughter commented this book on Goodreads!!!! She must love you soooo much.

Formulas usually do better than humans, wow.

And again, this chapter combines several former points together, which pretty much makes sense.

Things are getting extremely trickier lol

The Peano axioms are cool, but things have gotten fucking difficult.

Axioms are good, I know. We basically start everything from them. But who can tell me why it's so freaking hard to prove that 1 + 1 = 2 😭

Feels good so far.
Seems like the axiom of infinity basically shows how natural numbers are generated.
Generate something from nothing, cool.
So anyway, why is it possible to generate something from nothing? Is "nothing is a thing" a prerequisite here?

People tend to find coherence between things, constructing stories they believe. And boom, overconfidence emerges.

Seems like again, this chapter is a combination of what has been told.

Got it.
WYSIATI still works here—the halo effect and hindsight.
People are prone to simplify the reality, constructing "coherent" stories due to Sys 1, though the stories are usually just illusions.
They construct reasons for consequences, reshaping their mind to adapt new facts.
Basically, they are just illusions.

Seems like we can define every common operations using inverses and composites, e.g. addition, subtraction etc.
Rules of certain operation can be defined too.
Wow, I see the whole universe.

Feels like what the chapters just told are mainly combinations of what have been told earlier.

The regression effect, problems with correlation caused by WYSIATI and intuitive heuristics are pretty easy to understand once I've gotten the related basics.

So cool, let's proceed.

Wow, so even the Foundation isn't united, too.

Other planets want to oppose the Foundation, while Mule keeps attacking the Foundation, acquiring resources and occupying planets.

That's dumb, though pretty true. the Foundation series is really a replica of the history of the Roman Empire lol.

Total gut.

Bluestar is getting hysterical. And the name Lostface has been the worst name she's given. That was a regret.

Anyway, what's the meaning of clans? Does it actually bring anything good? Seems like such a distinction is detrimental.

They should unite, not fight each other.

Anyway, I think that's also what the warrior cats series want to discuss.

Cool.

Mis says it'll be the fifth Seldon crisis, but doesn't it seem too obvious that it is simply just a crisis, not a Seldon one? Maybe it's because I've read the book once.

Btw, Mis is smart enough that he has even attempted to rediscover psychohistory.

And Indbur seems kind of annoyed. He sounds like a man who loves procedures, though the time isn't enough now lol

Cool, families!

they are pretty familiar with the std::map in C++ btw, and the section introduced a lot of available operations that can be applied to such families.

Pretty intuitive. Though it took me about 1 hour to fully comprehend it.

Aber das ist Mathe, da darf ich keine Beschwerden haben haha

Wow, the Mule is still a mystery.

Nothing important actually happened, it was just that the captain met the two and told them everything he knew.

They left Kalgan after that.

So what is the Mule actually going to do? Mental control everyone?

Feels good. Let me see how it goes first.

Bluestar is definitely insane now. Another political projection lol.

Go ahead.

I've started trying to deduce this bunch of things myself yesterday. It felt and still feels perfect, comprehension has become better.
The section I've just read has introduced functions. This feels pretty functional itself lol. Haskell just hit me again.
And it finally started introducing naturals.
Yes, I know it, set theory is, in fact, able to express naturals in a fascinating way. That's pretty captivating.

Bayta and Toran are on Kalgan now.

The escaping clown, weird guard, weird lieutenant.

Seems like they are mind controlled by the Mule.

Hell, das ist ganz bizarr.

Wow, again, the Mule.

And the name, Kalgan. The captain is on the road to that planet.

Seems like the foundation people believe in Seldon too much, which could also be why they nearly fail (I remember they'd fail if there weren't the second foundation).

的确可以。
这本书最大的问题就是太旧了，别的问题其实不大。
随后语言的演变讲得有点笼统，但也可以。

不得不说，这本书语言的接触导致的变化方面讲得很好，很详细，例子非常多。
只不过问题还是一个：很多例子和理念过时了，术语也有点陈旧。
But again, that's pretty normal.

这本书文字方面讲得还可以。
虽然其中的一些说法有些绝对，也有些歧视手语（所谓文字必须对应「有声语言」）和盲文（「文字是视觉符号」）了lol
但这些都是上古残留——毕竟是1980s的书了。
很好玩的是，里面最后提到的「现代网络用语」其实是2010年代中国的网络用语，现在看非常古老了——颇有一种网络考古的味道。

Feels good.

I still don't get what a partition or something else is though.

Defining a relation as a set of ordered pairs is fascinating. I think we can basically define every binary relationship in math by doing so.

And feels like set theory is something more than just sets. Presumably, it can describe lots of concepts—naturals maybe.

Seems like set theory is more than just a theory about sets.