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It's difficult to put firm numbers to the costs and benefits of lead abatement. But for a rough idea, let's start with the two biggest costs. Nevin estimates that there are perhaps 16 million pre-1960 houses with lead-painted windows, and replacing them all would cost something like $10 billion per year over 20 years…
Perhaps human aesthetics emerged through runaway sexual selection, with aesthetic tastes evolving as part of female mate choice. In this view, some female hominids just happened to have certain tastes concerning male ornaments. The artists best able to fulfill these tastes inseminated more aesthetic groupies and sired…
The question of the physical embodiment of this memory remains. For this, various authorrs have suggested a variety of solutions. It has beeen proposed to assume that the thresholds—orr, more broadly stated, the stimulation criteria—^f or various nerve cells change with time as functions of the previous history of…
The four NDEA Titles featured in this report contributed to general upward trends (e.g., in the rate of high school, college, and graduate completion; in the level of student preparedness in science, mathematics, and modern languages; in the number of teachers and degree-granting institutions; in the number of…
This century's last great trend was noted by acute observers in 1996, yet most people failed to appreciate it. While business gurus were proclaiming the new dominance of creativity and innovation over mere production, the growing ease with which information was transmitted and reproduced made it harder for creators to…
It appeared that sixty-five percent of people would torture someone to death, if pressured to do so. The results made their way into both psychology and cocktail party conversation. But were they correct? At least one woman doesn't think so. Gina Perry, for her book, Behind the Shock Machine, traced as many…
Learn to Listen Rather Than Speak This one is a lot harder than it sounds, and I say this as someone who loves speaking and voicing her opinion on things. One of the greatest things we, as privileged people, can bring to a discussion being held by non-privileged groups is our closed mouths and open ears/minds. When…
More and more ordinary people are thrust into a winner-take-all economy. It is a 21st century reprise of the Horatio Alger stories from the 19th century. A token few will find success on Kickstarter or YouTube, while overall wealth is ever more concentrated and social mobility rots. Social media sharers can make all…
evolution doesn't always proceed steadily
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…
One property of Bayes’s theorem, in fact, is that our beliefs should converge toward one another—and toward the truth—as we are presented with more evidence over time. In figure 8-8, I’ve worked out an example wherein three investors are trying to determine whether they are in a bull market or a bear market. They…
Lorenz and his team were working to develop a weather forecasting program on an early computer known as a Royal McBee LGP-30.21 They thought they were getting somewhere until the computer started spitting out erratic results. They began with what they thought was exactly the same data and ran what they thought was…
In one classic demonstration, clinical psychologists were asked to give confidence judgments on a personality profile. They were given a case report in four parts, based on an actual clinical case, and asked after each part to answer a series of questions about the patient’s personality, such as his behavioral…
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…
The international trading became the most profitable of all enterprises, and great land-"owners" with clear-cut king's "deeds" to their land went often to international gold moneylenders. The great land barons underwrote the building of enterprisers' ships with their cattle or other real wealth, the regenerative…
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.
In so far as a scientific statement speaks about reality, it must be falsifiable: and in so far as it is not falsifiable, it does not speak about reality.
[Decimal currency is desirable because] by that means all calculations of interest, exchange, insurance, and the like are rendered much more simple and accurate, and, of course, more within the power of the great mass of people. Whenever such things require much labor, time, and reflection, the greater number who do…
[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…
Of all regions of the earth none invites speculation more than that which lies beneath our feet, and in none is speculation more dangerous; yet, apart from speculation, it is little that we can say regarding the constitution of the interior of the earth. We know, with sufficient accuracy for most purposes, its size…