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Attending college has been considered one of the most protable investments, annualized returns ranging from 8% to 13% (Card 1999). I utilize a simple approach, as in Mehra and Prescott (1985), to quantify how much of the excess return to college is explained by its risk. I also explore the role played by heterogeneous…
It took hundreds of millions of years to produce the life that now inhabits the earth—eons of time in which that developing and evolving and diversifying life reached a state of adjustment and balance with its surroundings. The environment, rigorously shaping and directing the life it supported, contained elements…
Nature is regarded as a death-bearing, self-destructive force, but not because of its blindness. Yet where can a blind force lead except to death ? Humans admit nature to be a blind force even when they regard themselves as part of it and accept death as a kind of law and not as a mere accident which has permeated…
Also he has grasped the falsity of the hedonistic attitude to life. Nearly all western thought since the last war, certainly all “progressive” thought, has assumed tacitly that human beings desire nothing beyond ease, security and avoidance of pain. In such a view of life there is no room, for instance, for patriotism…
Start simple, recommends Karen Tankersley in her ASCD book The Threads of Reading: Strategies for Literacy Development (2003): Introduce beginning sounds first. Add medial and final sounds after the child has mastered the beginning sounds. Select one-syllable words that isolate the initial letter. This method lets…
Some simple ways to work numbers into the conversation: Note numbers on signs when you’re walking or driving with children: speed limits and exit numbers, building addresses, sale prices in store windows. Ask children to count how many toys they’re playing with, how many books they’ve pulled out to read, or how many…
Scientific instruction is a craft. This is because skill in a science, knowledge of its diverse aspects, and mastery of it are the result of a habit.... The easiest method of acquiring the scientific habit is through acquiring the ability to express oneself clearly in discussing and disputing scientific problems. This…
Traditionally, coaches and teachers operate quite differently when working with groups of children. Coaches tend to teach for success. For example, suppose a coach is teaching the skill of dribbling a basketball. He or she first shows the children exactly what good, proper dribbling looks like. The demonstration may…
A good card magician knows many tricks that depend on luck—they don’t always work, or even often work. There are some effects—they can hardly be called tricks—that might work only once in a thousand times! Here is what you do: You start by telling the audience you are going to perform a trick, and without telling them…
Ordinary people can help create new money by making promises. You constrain the future by making a plan, and a promise to keep to it. Money is created in response, because in making that promise you have created value. New money is created to represent that value. This is why it is possible for banks to fall apart…
Thank you for your compliment to Esther and to her parents. We do not claim credit for her achievements. She was lucky to be the oldest of six, so we had little time for her and gave her little of our attention. She befitted from our benign neglect. She learned from a young age to choose her own path through life. She…
Formation of lasting memories is believed to rely on structural alterations at the synaptic level. We had found that increased neuronal activity down-regulates Nogo receptor-1 (NgR1) in brain regions linked to memory formation and storage, and postulated this to be required for formation of lasting memories. We now…
If you have great talents, industry will improve them; if moderate abilities, industry will supply their deficiencies. Nothing is denied to well-directed labour; nothing is ever to be attained without it.
[The] complex pattern of the misallocation of credit for scientific work must quite evidently be described as 'the Matthew effect', for, as will be remembered, the Gospel According to St. Matthew puts it this way: For unto every one that hath shall be given, and he shall have abundance: but from him that hath not…
In the spring of 1760, [I] went to William and Mary college, where I continued two years. It was my great good fortune, and what probably fixed the destinies of my life, that Dr. William Small of Scotland, was then Professor of Mathematics, a man profound in most of the useful branches of science, with a happy talent…
The laws of nature, as we understand them, are the foundation of our knowledge in natural things. So much as we know of them has been developed by the successive energies of the highest intellects, exerted through many ages. After a most rigid and scrutinizing examination upon principle and trial, a definite…
Los Angeles air quality has improved in recent years because of new regulations on automobile and plant emissions, but the American Lung Association still ranks the Los Angeles area as the metropolitan region in America most polluted by year-round particles, short-term particles, and ozone. This persistent ranking…
[T]he moment man first picked up a stone or a branch to use as a tool, he altered irrevocably the balance between him and his environment. From this point on, the way in which the world around him changed was different. It was no longer regular or predictable. New objects appeared that were not recognizable as a…
“Understand this,” said Xaphania: “Dust is not a constant. There’s not a fixed quantity that has always been the same. Conscious beings make Dust, they renew it all the time, by thinking and feeling and reflecting, by gaining wisdom and passing it on. “And if you help everyone else in your worlds to do that, by…
John Washbrook, who was himself a senior academic in the department, took me under his wing and he told me something that very important. He said, "Just start something, no matter how humble." This is not recall; about programming, this is about research. But no matter how humble and unoriginal and unimportant it may…