Philosophy of Science.

"Philosophy of Science: a very short introduction"
by Samir Okasha

i learned a lot from this book, a really interesting and well written book.
if you consider yourself as a scientist (or to-be) and have never read any book
on 'philosophy of science', try this one. it's easy and worth....

Henri Poincaré

http://en.wikipedia.org/wiki/Henri_Poincaré

"creativity and invention consist of two mental stages, 
first random combinations of possible solutions to a problem, followed by a critical evaluation."
according to Poincaré's two stages.

Paul Erdos...

the followings are copied from http://en.wikipedia.org/wiki/Paul_Erdős

Other idiosyncratic elements of Erdős' vocabulary include:

• children were referred to as "epsilons";
• women were "bosses";
• men were "slaves";
• people who stopped doing math had "died";
• people who physically died had "left";
• alcoholic drinks were "poison";
• music was "noise";
• people who had married were "captured";
• people who had divorced were "liberated";
• to give a mathematical lecture was "to preach" and
• to give an oral exam to a student was "to torture" him/her.

tensor analysis

"General relativity is formulated completely in the language of tensors.

Einstein had learned about them, with great difficulty, from the geometer

Marcel Grossmann. Levi-Civita then initiated a correspondence with Einstein

to correct mistakes Einstein had made in his use of tensor analysis."

- from http://en.wikipedia.org/wiki/Tensor_analysis

Einstein had learned about tensors "WITH GREAT DIFFICULTY."

And Levi-Civita wanted to correct Einstein's misunderstanding.

Hm... interesting... :)

- H. Choi

superintelligence

http://www.forbes.com/2009/06/22/singularity-robots-computers-opinions-contributors-artificial-intelligence-09_land.html

http://www.forbes.com/2009/06/18/superintelligence-humanity-oxford-opinions-contributors-artificial-intelligence-09-bostrom.html

when computers get smarter than us in every thing, it seems to me the end of the world...

computers will get better (or at least same as the before) every single seconds...

and computers will never take a rest.... and they are supposed to be much faster than us...

so, once they get to have the human-level intelligence,

they will be able to prove every theories pretty soon and invent every possible machines...

so that there will be no more questions....

there is no more adventure... no more struggle, no more curiosity...

every stock market will be controlled by computers... every research will be done by computers...

computers will be much better entertainers, so that human entertainers will get fired...

basically, all the work will be done by computers... all the people will get fired...

all that we are going to do is just for fun...

but unfortuately, computers know better way how to make our pleasure...

so we will just sit and eat...and push a button for pleasure...

finally, we will be like pets to computers...

they will feed us with food and pleasure... and they do all the real fun stuff like adventure, research and enterainment...

even though they won't feel that way working on those stuff as we are not feeling fun when we work.

it means ending "the world" and starting a new world where there is no more fun... no more pain... just like a timeless space...

- H. Choi

history on manifold

history is on a manifold of space and time or we can say history is a manifold.
that's one of the reasons why we cannot understand the meaning of current
issues clearly. in that sense, the current time is on the edge of the manifold.
that's the reason why we have to look at the "past" to estimate (understand)
the meaning of "present."

still we cannot understand "present" perfectly until long time later when we can
see the issues on the manifold. then we will get to know the meanings more clearly.
unless we lose the facts, just it takes time .

- H. Choi