Free for All Comers Discussion: History and Science
11 years ago
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Polling Data, or why Johnny can't do science
Comments (69)Here's a follow-up to Edna DeVore's column ~6-7 posts back : Evolution: It's Only a Theory, But One Worth Teaching By Edna DeVore Director of Education and Public Outreach posted: 03 March 2005 06:13 am ET My prior column was composed at 35,000 feet above North America as I surveyed the landscape from the air. The patterns etched by geological evolution are visible at altitude. Closer up, fossils tell the story of earlier life upon our continent. Gazing to the heavens, astronomers gather evidence of the evolution of planets, stars, galaxiesthe whole universe evolves. Natural history museums host large collections of extant and extinct life that document biological evolution. Yet, as I noted, teaching evolution remains controversial in America. A flood of email ensued. Many were supportive; some asked questions. Several negative and hostile emails were openly critical of my assertion that American schools should teach evolution in science classrooms to "leave no child behind". In addition to rejecting evolution for religious reasons, several people claimed that there was not sufficient evidence, that scientists could not all agree, or that evolution is "only a theory" which they equate with an unfounded idea. Evolution is supported by evidence. There are several thousand peer-reviewed scientific journals where the evidence is presented in article after article. Natural history museums house large collections of fossils that document the history of life. Geologists and astronomers have a massive amount of observational evidence of the long-term change in physical systems: stars, galaxies, planets, interstellar dust, asteroids, etc. Biologists observe and document the patterns of the evolution of life: for example, the fossil record, DNA, and the observation of evolution in action such as the adaptive evolution of antibiotic-resistant strains of bacteria that now pose a serious threat to human health. Selective breeding in agriculture generated our crops and domestic animals over thousands of years; agriculture is evolution in action. Certainly, there are continuing debates among scientists about the particulars of cosmic, planetary, and biological evolution. The nature of science requires continual questioning of ideas, evidence and theories. Theoretical scientists consider what we know, and pose new ideas and models to explain the natural world. New models and ideas generate new scientific tests of theory: observational experiments at Earth and space-based observatories, high-energy collisions of particle physics, deep-sea dives at the plate boundaries, and lab experiments in molecular biology to cite a few. Science is based upon observational and experimental evidence. Concepts that dont match observations are altered or tossed out. Its an iterative cycle. Likewise, if a scientist makes an observation or does an experiment that cannot be replicated, the results are suspect. Scientific explanations of the natural world are tested against nature, and discarded if they do not work. Consider cold fusion. Science is a self-correcting system that provides humans with powerful descriptions that allow us to understand and predict how the natural world works. Consider Johannes Kepler, a mathematician who is often cited as one of the first modern astronomers. He took observational data collected by Tycho Brahe who was a terrific observer and had mounds of measurements for Mars. Brahe challenged Kepler to make sense of these Mars data. Tycho had his own ideas, but he didnt have Keplers mathematical skills. Kepler spent months trying to fit the Mars data to the circular epicycles and deferents that explained planetary orbits in the astronomical tradition of his day. The data just didnt fit. Unlike his predecessors, Kepler took a leap toward modern science. He elected to trust the data, and abandoned the ancient model of circles upon circles for a new description of planetary motion. His ideas can be condensed into three statements which we call Keplers laws. In their simplest form, they are: planets orbit on elliptical paths with the Sun at one focus; the period of a planets orbit is proportional to its distance from the Sun; and a planets speed in orbit is proportional to its distance from the Sun (equal areas are swept out in equal time). Kepler didnt know why the planets orbited as they did, but he could describe their orbits and make accurate predictions about future positions. The next big step came with Isaac Newton who explained that why planets orbit the Sun: gravity. Only Mercury didnt behave as predicted by Newtons physics. Einstein remodeled physics once again with special and general relativity, and was able to explain Mercurys motion. The theory of gravitation is a powerful explanation of how objects interact in space-time. Its heritage goes back to Keplers description of planetary motion based upon Brahes observational data. Its funny how no one argues that gravity is "only a theory," yet many dismiss evolution as "only a theory." At a fundamental level, popular English and scientific usage are at odds here. In popular culture, a "theory" is understood to be a guess or speculation that may or may not be based upon evidence and analysis. In science, a theory is "a well-substantiated explanation of some aspect of the natural world that can incorporate facts, laws, inferences, and tested hypotheses." (Teaching About Evolution and the Nature of Science,National Academy of Sciences, 1998: 7). A scientific theory is the larger explanation of how the well-tested "laws" fit together to describe the natural world. Dismissing evolution as "only a theory" is, at the simplest level, a misunderstanding of the meaning of "theory" in science. But, in the current controversy, discounting evolution as "only a theory" is more than a semantic debate. Its a political statement at the heart of the attack upon teaching evolution in science classrooms in America. Science is a powerful tool for understanding the natural world, and has a dominant role in modern economics and culture. Scientific theories are at the heart of the enterprise. In the science classroom, children should learn about major scientific theories such as gravitation and evolution. Science is a way of knowing, but not the only way of knowing. There are things that science does not address. For example, music, art, emotion, and religious beliefs are all outside the domain of what science can address. I find it unfortunate that the controversy over the theory of evolution continues as science offers all humans a way to know about the natural world and how it works....See MoreThe History And Future Of Roses In Review (RIR)
Comments (12)Chris, you are welcome to send me the complete reorganization you have in mind. If you are concerned it might give Board members a coronary, then send it to me by email. My email address is available on this site. I promise you I won't have a coronary, even though I am on the Board. As to the three year terms of Board members, elections are expensive and time consuming. Holding them more often than every three years would mean we were spending an inordinate amount of time and effort on elections and less time on the business of the organization. I have to tell you I think such an approach would be counterproductive. However, I do agree the Board is too large and think we should have more effective limits on the number of consecutive years someone can serve on the Board. I am in my second term on the Board and it will be my last. If I can't get things done in six years, it's time for someone else to work on them. I'm not sure which big businesses you have dealt with, but I can tell you Boards of big businesses do not ask stockholders or anyone else for input before conducting the business of the company. I have seen them in action in their business meetings and they are less open than the ARS Board. Anyway, lay your suggestions on me and I will let you know what I think. The ARS is not perfect by any means and any ideas that will help will be welcomed....See MorePlant Science Day, Wednesday, August 1, 2012
Comments (1)Linked below is a pic of a tomato hornworm someone brought to the event. I thought it was rather large and we could watch as it chewed the leaf down. That is a dime & a quarter in the pic. Here is a link that might be useful: Tomato Hornworm pic...See MoreWhat Do You Do With ALL Your Free Time
Comments (40)Trailrunner, I hear what you are saying about the value of work, & how it contributes to lives, to society, to who we are. We are interdependent & couldn't get through a single day without the contributions of 100's of people! Isn't that a humbling thought? The efforts of so many are simply vital! One week without trash pick-up illustrates that reality beautifully! We really are all connected. We also live in a world where WORK is given so very much attention & adulation for all the wrong reasons! What people do to earn money (& of course how much they earn!) often defines them to an extent that I personally find bizarre. I know you know what I'm talking about! That is why I care less about how people earn a living than with other features of their humanity. What interests me the most about the people who have impressed me over the years, is a certain "quality of attention" they give to a task, no matter how grand or humble it may be. That presence, that "flow" as it has been called, is being fully human, & is strikingly beautiful. The way someone who is mindful & present sets a table, prepares a meal, interacts with a child, speaks to strangers, can mesmerize me. We can witness life in it's fullest, most whole, complete & beautiful, by seeing even the simplest thing done with great care. But, moments like that can easily be overlooked & or seen as meaningless in this world so obsessed with career paths & success strategies. Still, indeed, I well agree that a person can perform the work they do for a living with the care, attention & presence I am referring to, & when that happens, we are all made better! (Actually, you, your dh, your son & his wife (at the restaurant) impress me as fine examples of people who live like this!) You nursed the sick, you sang opera, you ran the trails. You have seen others nurse, sing & run as well. I would imagine that you did all of these things attentively, lovingly, mindfully, but certainly you have witnessed these tasks performed robotically or in a "check list" sort of fashion. For me, it is not the "what" but the "how" that leads to completion, wholeness, fufillment, whether we are "working" or not. Whatever we are doing, matters little in the end, but what could be sweeter than to feel content with "how" we've done things, no matter what they were, no matter how small or insignificant? To live with true quality of attention, to do our best, no matter if anyone is looking or a paycheck is in the mail. With this approach to life, when one "retires" the habit of living mindfully & being present has enriched the heart & mind so fully that a "deficit" or void of any kind is not perceived. Life in all of its fullness continues to surprise, delight & offer rich rewards, even without the job, title, paycheck & all the status & approval from others that those things confer....See More- 11 years ago
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