04 NOV 2018 by ideonexus
Degenerate Strategies and Cheating
Why isn't using a degenerate strategy considered cheating? Degenerate strategies take advantage of weaknesses in the rules of a game, but do not actually violate the rules. What kind of player would play in this way? The answer is both a dedicated player, who is overzealously seeking the perfect strategy, and an unsportsmanlike player, who has found a hole in the rules to exploit, even though he understands that he is not playing the game the way it was intended. These two kinds of players ca... 1 
notes
notesIs the same true of memorizing algorithms to solve the rubiks cube?
27 JUL 2018 by ideonexus
The Universality of Play
Gutsmuths.—Many of the ideas in PHome are better expressed, though independently arrived at, in the remarkable volume on play, published by Gutsmuths, ‘the father of play in Germany,’ towards the end of the eighteenth century. Gutsmuths recognised the universality of play among all ages and all peoples, the infinite number of games and the skill exhibited by the race in their invention and manipulation, the health-giving quality of play and its ultimate origin (though fatigue and ennui ... 1 notes
notes27 SEP 2013 by ideonexus
加油 as a Term of Encouragement
The Chinese characters say 加油 (Jia1 you2).加 is composed of 力 (power) and 口 (mouth). It means 'to add'油 is made out of 水 (氵, water) and 由(from/ due). It means oil.加（to add） 油（oil）= add oil or make an extra effort
加油 is a terribly common phrase in day to day life. If you want to encourage someone to carry on great work, or in a sports competition, you say 加油! A bit like 'go on!' in English.
Of course another literal meaning of 加油 is to refuel.
1 ShaoLan explains how the symbols break down.
21 JUN 2012 by ideonexus
Humans Give Life to Iron
It is by the aid of iron that we construct houses, cleave rocks, and perform so many other useful offices of life. But it is with iron also that wars, murders, and robberies are effected, and this, not only hand to hand, but from a distance even, by the aid of missiles and winged weapons, now launched from engines, now hurled by the human arm, and now furnished with feathery wings. This last I regard as the most criminal artifice that has been devised by the human mind; for, as if to bring de... 1 notes
notesPliny the Elder discusses the good and bad uses for iron and the poetic fact that nature rusts it away from us.
07 MAY 2012 by ideonexus
History of Science and Religion
Some people want to put warning stickers on biology textbooks, saying that the theory of evolution is just one of many theories, take it or leave it. Now, religion long predates science; it'll be here forever. That's not the issue. The problem comes when religion enters the science classroom. There's no tradition of scientists knocking down the Sunday school door, telling preachers what to teach. Scientists don't picket churches. By and arge—though it may not look this way today—science a... 1 notes
notesHow the Middle East was the center of scientific progress until religious fever took over it, the same is seen in Jewish and Christian cultures.
29 MAR 2012 by ideonexus
Gravity is an Extremely Feeble Force
...imagine holding an electron in your left hand and another electron in your right hand and bringing
these two identical electrically charged particles close together. Their mutual gravitational attraction will favor their getting closer
while their electromagnetic repulsion will try to drive them apart. Which is stronger? There is no contest: The electromagnetic
repulsion is about a million billion billion billion billion (10 to the 42th) times stronger! If your right bicep represents the s...In comparison to the other forces holding the Universe together.
02 JAN 2012 by ideonexus
Humphry Davy's Wife Doesn't Like Michael Faraday
She in turn may also have found Faraday physically awkward, and even irritating. He was small and stocky — not more than five foot four — with a large head that always seemed slightly too big for his body. His broad, open face was surrounded by an unruly mass of curling hair parted rather punctiliously in the middle (a style he never abandoned). His large, dark, wide-apart eyes gave him a curious air of animal innocence. He spoke all his life with a flat London accent (no match for Jane... 1 notes
notesAn amusing description of the physicist, who was widely respected as a lecturer, but disliked by the social woman.
20 MAY 2011 by ideonexus
An Origami Metaphor for Fetal Development
The sheets of tissue that
fold, invaginate and turn inside out in a developing embryo do indeed grow, and it is that very growth that provides part of the motive force which, in origami, is supplied by the human hand. If
you wanted to make an origami model with a sheet of living tissue instead of dead paper, there is at
least a sporting chance that, if the sheet were to grow in just the right way, not uniformly but faster
in some parts of the sheet than in others, this might automatically cau...Cells divide and fold into new forms, just as origami structures become other structures through new folds.
20 MAY 2011 by ideonexus
Enjoying Science Requires Effort
When you have reached and entered the gates of science, how are you to use and enjoy this new and beautiful land?
This is a very important question for you may make a twofold use of it. If you are only ambitious to shine in the world, you may use it chiefly to get prizes, to be at the top of your class, or to pass in examinations; but if you also enjoy discovering its secrets, and desire to learn more and more of nature and to revel in dreams of its beauty, then you will study science for it...
1 Many don't love nature and don't fall in love with science as a result.
19 MAY 2011 by ideonexus
The Empty Space in an Atom
A favourite analogy portrays the nucleus as a fly
in the middle of a sports stadium. The nearest neighbouring nucleus is another fly, in the middle of
an adjacent stadium. The electrons of each atom are buzzing about in orbit around their respective flies, smaller than the tiniest gnats, too small to be seen on the same scale as the flies. When we
look at a solid lump of iron or rock, we are 'really' looking at what is almost entirely empty space. It
looks and feels solid and opaque because o...Our senses are not adapted to experience the empty space between atoms.
