232_h2 본문읽기 35
카테고리 없음2023. 5. 12. 01:36
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2262-35
Inflationary risk refers to uncertainty regarding the future real value of one's investments. Say, for instance, that you hold $100 in a bank account that has no fees and accrues no interest. If left untouched there will always be $100 in that bank account. If you keep that money in the bank for a year, during which inflation is 100 percent, you've still got $100. Only now, if you take it out and put it in your wallet, you'll only be able to purchase half the goods you could have bought a year ago. In other words, if inflation increases faster than the amount of interest you are earning, this will decrease the purchasing power of your investments over time. That's why we differentiate between nominal value and real value.
2262-36
Touch receptors are spread over all parts of the body, but they are not spread evenly. Most of the touch receptors are found in your fingertips, tongue, and lips. On the tip of each of your fingers, for example, there are about five thousand separate touch receptors. In other parts of the body there are far fewer. In the skin of your back, the touch receptors may be as much as 2 inches apart. You can test this for yourself. Have someone poke you in the back with one, two, or three fingers and try to guess how many fingers the person used. If the fingers are close together, you will probably think it was only one. But if the fingers are spread far apart, you can feel them individually. Yet if the person does the same thing on the back of your hand (with your eyes closed, so that you don't see how many fingers are being used), you probably will be able to tell easily, even when the fingers are close together.
2262-37
One interesting feature of network markets is that "history matters." A famous example is the QWERTY keyboard used with your computer. You might wonder why this particular configuration of keys, with its awkward placement of the letters, became the standard. The QWERTY keyboard in the 19th century was developed in the era of manual typewriters with physical keys. The keyboard was designed to keep frequently used keys (like E and O) physically separated in order to prevent them from jamming. By the time the technology for electronic typing evolved, millions of people had already learned to type on millions of QWERTY typewriters. Replacing the QWERTY keyboard with a more efficient design would have been both expensive and difficult to coordinate. Thus, the placement of the letters stays with the obsolete QWERTY on today's English-language keyboards.
2262-38
One way of measuring temperature occurs if an object is hot enough to visibly glow, such as a metal poker that has been left in a fire. The color of a glowing object is related to its temperature: as the temperature rises, the object is first red and then orange, and finally it gets white, the "hottest" color. The relation between temperature and the color of a glowing object is useful to astronomers. The color of stars is related to their temperature, and since people cannot as yet travel the great distances to the stars and measure their temperature in a more precise way, astronomers rely on their color. This temperature is of the surface of the star, the part of the star which is emitting the light that can be seen. The interior of the star is at a much higher temperature, though it is concealed. But the information obtained from the color of the star is still useful.
2262-39
The holy grail of the first wave of creativity research was a personality test to measure general creativity ability, in the same way that IQ measured general intelligence. A person's creativity score should tell us his or her creative potential in any field of endeavor, just like an IQ score is not limited to physics, math, or literature. But by the 1970s, psychologists realized there was no such thing as a general "creativity quotient." Creative people aren't creative in a general, universal way; they're creative in a specific sphere of activity, a particular domain. We don't expect a creative scientist to also be a gifted painter. A creative violinist may not be a creative conductor, and a creative conductor may not be very good at composing new works. Psychologists now know that creativity is domain specific.
Inflationary risk refers to uncertainty regarding the future real value of one's investments. Say, for instance, that you hold $100 in a bank account that has no fees and accrues no interest. If left untouched there will always be $100 in that bank account. If you keep that money in the bank for a year, during which inflation is 100 percent, you've still got $100. Only now, if you take it out and put it in your wallet, you'll only be able to purchase half the goods you could have bought a year ago. In other words, if inflation increases faster than the amount of interest you are earning, this will decrease the purchasing power of your investments over time. That's why we differentiate between nominal value and real value.
2262-36
Touch receptors are spread over all parts of the body, but they are not spread evenly. Most of the touch receptors are found in your fingertips, tongue, and lips. On the tip of each of your fingers, for example, there are about five thousand separate touch receptors. In other parts of the body there are far fewer. In the skin of your back, the touch receptors may be as much as 2 inches apart. You can test this for yourself. Have someone poke you in the back with one, two, or three fingers and try to guess how many fingers the person used. If the fingers are close together, you will probably think it was only one. But if the fingers are spread far apart, you can feel them individually. Yet if the person does the same thing on the back of your hand (with your eyes closed, so that you don't see how many fingers are being used), you probably will be able to tell easily, even when the fingers are close together.
2262-37
One interesting feature of network markets is that "history matters." A famous example is the QWERTY keyboard used with your computer. You might wonder why this particular configuration of keys, with its awkward placement of the letters, became the standard. The QWERTY keyboard in the 19th century was developed in the era of manual typewriters with physical keys. The keyboard was designed to keep frequently used keys (like E and O) physically separated in order to prevent them from jamming. By the time the technology for electronic typing evolved, millions of people had already learned to type on millions of QWERTY typewriters. Replacing the QWERTY keyboard with a more efficient design would have been both expensive and difficult to coordinate. Thus, the placement of the letters stays with the obsolete QWERTY on today's English-language keyboards.
2262-38
One way of measuring temperature occurs if an object is hot enough to visibly glow, such as a metal poker that has been left in a fire. The color of a glowing object is related to its temperature: as the temperature rises, the object is first red and then orange, and finally it gets white, the "hottest" color. The relation between temperature and the color of a glowing object is useful to astronomers. The color of stars is related to their temperature, and since people cannot as yet travel the great distances to the stars and measure their temperature in a more precise way, astronomers rely on their color. This temperature is of the surface of the star, the part of the star which is emitting the light that can be seen. The interior of the star is at a much higher temperature, though it is concealed. But the information obtained from the color of the star is still useful.
2262-39
The holy grail of the first wave of creativity research was a personality test to measure general creativity ability, in the same way that IQ measured general intelligence. A person's creativity score should tell us his or her creative potential in any field of endeavor, just like an IQ score is not limited to physics, math, or literature. But by the 1970s, psychologists realized there was no such thing as a general "creativity quotient." Creative people aren't creative in a general, universal way; they're creative in a specific sphere of activity, a particular domain. We don't expect a creative scientist to also be a gifted painter. A creative violinist may not be a creative conductor, and a creative conductor may not be very good at composing new works. Psychologists now know that creativity is domain specific.
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