At the core of this post is a review of a new book, Learn Robotics with Raspberry Pi: Build and Code Your Own Moving, Sensing, Thinking Robots. I recommend it as a great above-basic level introduction to building a standard robot, learning a bit about the Linux operating system, learning to program in Python, and learning some basic electronics. However, I want to frame this review in a bit more context which I think will chase some readers away from this book while at the same time making others drool. But don’t drool on the electronics. Continue reading Making Raspberry Pi Robots
Wikipedia tells us that a “computer hacker is any skilled computer expert that uses their technical knowledge to overcome a problem.” The all knowing one goes on to note that the term has been linked in popular parlance with the made up Wikipedia word “security hacker.” Such an individuals “uses bugs or exploits to break into computer systems.”Continue reading How to be a hacker
There is probably a rule in the chambers of the United States Congress that you can’t punch a guy. Living rules are clues to past behavior. For instance, where I live now, there is a rule: You can’t leave your hockey goals or giant plastic basketball nets out overnight. There are no appropriate age children for that rule to affect. All the old people who live on my street have to drag those things into the garage at the end of every day, after their long sessions of pickup ball. More likely, years ago, there were kids everywhere and the “Get off my lawn” contingent took over the local board and made all these rules.
So, today, in Congress, you can’t hit a guy, but in the old days, that wasn’t so uncommon.
You have heard about the caning of Charles Sumner. Southern slavery supporter Preston Brooks beat the piss out of Charles Sumner, an anti-slave Senator from Massachusetts. They weren’t even in the same chamber. Brooks was in the House, Sumner was in the Senate. Sumner almost didn’t survive the ruthless and violent beating, which came after a long period of bullying and ridicule by a bunch of southern bullies. Witnesses describe a scene in which Brooks was clearly trying to murder Sumner, and seems to have failed only because the cane he was using broke into too many pieces, depriving the assailant of the necessary leverage. Parts of that cane, by the way, were fashioned into pendants worn by Brook’s allies to celebrate his attempted murder of a Yankee anti-slavery member of Congress.
Here’s the thing. You’ve probably heard that story, or some version of it, because it was a major example of violence in the US Congress. But in truth, there were many other acts of verbal and physical violence carried out among our elected representatives, some even worse, often in the chambers, during the decades leading up to the Civil War. Even a cursory examination of this series of events reveals how fisticuffs, sometimes quite serious, can be a prelude to a bloody fight in which perhaps as many as a million people all told were killed. Indeed, the number of violent events, almost always southerner against northerner, may have been large enough to never allow the two sides, conservative, southern, right wing on one hand vs. progressive, liberal not as southern, on the other, to equalize in their total level of violence against each other. Perhaps there are good people on both sides, but the preponderance of thugs reside on one side only.
Which brings us to this. You hears of the caning of Sumner, but you probably have not read The Field of Blood: Violence in Congress and the Road to Civil War by Yale historian Joanne B. Freeman.
Professor Freeman is one of the hosts of a podcast I consider to be in my top three favorite, Backstory, produced by Virginia Humanities. Joanne is one of the “American History Guys,” along with Ed Ayers (19th century), Brian Balogh (20th Century), Nathan Connolly (Immigration history, Urban history) and emeritus host Peter Onuf (18th century). Freeman writes in her newest book of the first half of the 19th century, but her primary area of interest heretofore is the 18th century, and her prior works have focused, among other things, on Alexander Hamilton: Affairs of Honor: National Politics in the New Republic about the nastiness among the founding fathers, and two major collections focused on A.H., The Essential Hamilton: Letters & Other Writings: A Library of America Special Publication and Alexander Hamilton: Writings .
I strongly urge you to have a look at Freeman’s book, in which she brings to light a vast amount of information about utter asshatitude among our elected representatives, based on previously unexplored documents. I also strongly urge you to listen to the podcast. The most recent edition as of this writing is on video games and American History. The previous issue is covers the hosts’ book picks for the year.
Not that astronauts necessarily stink. Well, actually, they probably do after a while, but I suppose one gets used to it.
Anyway, we are all faced, or at least those of us who live in countries that have rocket ships all face, the question of personed vs. un-personed space flight as a way of doing science abroad and related quests. I’m not sure myself what I think about it, but considering the huge cost and difficulty, and the physical limitations, of using humans to run instruments on other planets or in space, and the sheer impossibility of human space missions really far away, the best approach is probably to use a lot of robots. Continue reading We Don’t Need No Stinking Astronauts: The History of Unmanned Space Exploration
Don’t Mess With Me: The Strange Lives of Venomous Sea Creatures by Paul Erickson is part of a series that is currently small but hopefully growing by Tilbury House. I previously reviewed One Iguana Two Iguanas (about iguanas).
Like the Iguana book, Erickson’s book for third through seventh graders (8-12 or so years of age) contains real, actual, science, evolutionary theory, and facts about nature, along with great pictures. The key message is that toxins exist because they provide an evolutionary advantage to those organisms that use them. Why are venomous animals so common in watery environments? Read the book to find out.
Species mentioned includ the blue-ringed octopi, stony corals, sea jellies, stonefish, lionfish, poison-fanged blennies, stingrays, cone snails, blind remipedes, fire urchins.
Highly recommended as a STEM present this holiday season.
The land and marine iguanas of the Galapagos Islands are famous. Well, the marine iguanas are famous, and the land iguanas, representing the ancestral state for that clade of two species, deserve a lot of credit as well. The story of these iguanas is integral with, and parallel to, the story of the Galapagos Islands, and of course, that story is key in our understanding of and pedagogy of evolutionary biology, and Darwin’s history. Continue reading One Iguana Two Iguanas: Children’s evolutionary biology book, with lizards!
Acadia Greene is a curious cartoon girl who runs around observing the natural world and conducting scientific investigations, in two recently released and very well done books by Katie Coppens, with illustrations by Holly Hatam: Continue reading Investigate Science: Acadia Files
There are connections between the Carboniferous and our modern problem with Carbon. Some of the connections are conceptual, or object lessons, about the drastic nature of large scale climate change. Some are lessons about the carbon cycle at the largest possible scale — first you turn a double digit percentage of all life related matter into coal, then you wait a few hundred million years, then you burn all the coal and see what happens! There are also great mysteries that you all know about because every Western person and a lot of non Western people have, at one time or another, stood in front of a museum exhibit declaring, “The very spot you stand was the site of an ancient sea bla bla bla” and somewhere that exhibit, or near it, is a life size diorama with scorpions and millipedes the size of a dog. Continue reading Millipedes as long as a car, scorpions as big as a dog. A large dog.
Some time ago I reviewed Electronics for Kids: Play with Simple Circuits and Experiment with Electricity! by Øyvind Nydal Dahl, which is a very good introduction to electricity and how to hvae fun with it. There is now a new book that is a somewhat simplified version by the same author, A Beginner’s Guide to Circuits: Nine Simple Projects with Lights, Sounds, and More!.
This new book is smaller, has fewer projects, requires the purchase of fewer components, is an accordingly less expensive book, and perhaps most important for some people, requires no solder! Continue reading A Beginner’s Guide to Circuits
LEGO Micro Cities: Build Your Own Mini Metropolis! is a LEGO building idea book that provides a macro number of examples of building buildings, or other structures using a very small number of bricks. It is like the N-guage of LEGO. This is sort of the opposite of the LEGO idea book I recently reviewed, The LEGO Architecture Idea Book, because the latter is for large scale, and the former for very tiny scale.
Author Jeff Friesen is a famous LEGO builder, and a photographer, who tweets at @jeff_works.
You get an idea of how to build skyscraper, bridges, public transit elements, and tightly packed downtown zones. There are suggestions for how to build the geology that underlies the buildings and other infrastructure. And the subways. Continue reading Build Miniature Cities with LEGO
I’m about to trash skepticism (as a cult) but before I do, I want to recommend that you get Steve Novella’s excellent new edition of The Skeptics’ Guide to the Universe: How to Know What’s Really Real in a World Increasingly Full of Fake.
I no longer call myself a skeptic. Well, actually, I probably never really did, but now I’m more explicit about that. Why? Two reasons. 1) Global warming and other science deniers call themselves skeptics, and I don’t want any confusion. 2) The actual “skeptics movement” is described as…
…a modern social movement based on the idea of scientific skepticism (also called rational skepticism). Scientific skepticism involves the application of skeptical philosophy, critical-thinking skills, and knowledge of science and its methods to empirical claims, while remaining agnostic or neutral to non-empirical claims (except those that directly impact the practice of science). The movement has the goal of investigating claims made on fringe topics and determining whether they are supported by empirical research and are reproducible, as part of a methodological norm pursuing “the extension of certified knowledge”. The process followed is sometimes referred to[by whom?] as skeptical inquiry.
That’s all nice and all, but I discovered that the actual skeptics movement is made out of people not quite so cleanly guided by a philosophy, roughly one third of whom are not really skeptics (such as Penn Jilette and James Randi, who allowed their libertarian philosophy to drive “skepticism” of anthropocentric global warming long after the scientific consensus was established), “mens rights activists” (MRAs) who vigorously attacked anyone speaking out in favor of women’s rights, against rape, etc., and #MeToo movement poster boys, who have for years used skeptical conferences as their own private meat markets.
Besides, I’m an actual scientist, so I can be a fan of science without having to be a fanboy, which makes it easier for me.
I started writing publicly, blogging, partly to be an on-line skeptic, to take on politically charged topics, especially as related to evolutionary biology, but other areas of science as well (and more recently, climate change), addressing falsehoods and misconceptions. But I very quickly discovered that there multiple and distinct kinds of “skepticism” make up the larger conversation.
There is a lot of very low level, knee jerk skepticism that is little more than uninformed reactionism, based on, at best, received knowledge. That is about as unskeptical as it gets. The Amazing Randy says Global Warming is nothing other than natural variation. Therefore, I will believe that. Uncritically. Some of this is what I long ago labeled as “hyperskepticism.” This is where potentially valid skepticism about a claim is melded with hyperbole. “There is not a single peer reviewed study that shows the bla bla bla bladiby bla” coming from the mouth of a person who has never once even looked for a peer reviewed study about any thing. They hyperskeptic may create entire categories of things that include claims worthy of debunking, and put all of the thing into the debunked category even if they are not.
A fairly benign example of this relates to CAM medicine. “CAM” refers to “complementary and alternative medicine” like acupuncture, rolfing, and the like. These are mostly forms of treatment that have no basis in science, and probably don’t do anything useful even if they sometimes cost real money. Hypersketpics put all CAM into the same category and light a match to it. But, there is a subset of CAM that is legit … the very fact that I wrote that sentence just there will disqualify me, and my entire post, and everything I ever say — there will be comments below that say “I stopped reading when you said “there is a subset of CAM that is legit”. OK, hold on a second, count to four. One two thee four. Now that all the hyperskeptics have gone off in a huff I can continue … and I can give you an example. There are people who undergo regular, uncomfortable, sometimes painful or sick-making treatments as part of their normal medical routine. Chemotherapy, dialysis, that sort of thing. We know that the quality of an individual’s life can be improved, their stress levels, reduced, and thus, probably, the outcome of their treatments improved or made less complicated, if the environment in which they get the treatments are more comfortable. This is why dentists put ferns and pictures of the ocean in their waiting rooms. There is evidence to suggest that surroundings should be considered in design of treatment rooms, waiting room, etc. (See for example, Brown and Gallant, 2006, “Impating Patient Outcomes Through Design: Acuity Adaptable Care/Universal Rom Design. “Critical Care Nursing Quarterly. 29:4(326-341) and Ulrich, Zimring, and Zhu, 2008, “A Review of the Research Literature on Evidence-Based Healthcare Design. HERD 1(3). They hyperskeptic wants divide the world into evidence based double blind study proven and everything else, with everything else being always wrong in all ways. (Perhaps I exaggerate a little, but only for the irony.) This concept, of considering room and environmental design, now standard, did exist before CAM (those dentists and their ferns) but the study an implementation of stress reducing design as we now know of it comes from the CAM movement. What is needed is not closing down CAM, but making it accountable. It would probably get much smaller if that happened, but what is left of it would be useful.
Having said all that, the skeptical world includes a number of excellent and widely respected actual self-identified skeptics who have science or medical backgrounds, and who occasionally write books that everyone should read. One such individual is Steven Novella, who wrote some time ago a skeptics guide to the universe. Well, that book is out of date (universes evolve) and there is now anew edition: The Skeptics’ Guide to the Universe: How to Know What’s Really Real in a World Increasingly Full of Fake.
Four others contributed to this volume, Bob Novella, Cara Santa Maria, Jay Novella, and Evan Bernstein.
I do not agree with everything in this book. For example, although the discussion of placebo effect is excellent, I have a different take on it. I like to divide the effect up into different categories than I do, and I want to make a more explicit connection between the phenomenon called placebo effect and the role and meaning of a control. But for the most part, every single one of the more than 50 topics covered in this book is well treated, informative, and enjoyable to read. (See what I did there? I was a little skeptical of the book, so now, you know it must be good!)
Do get and read this book, get one for a friend for a holiday gift, and enjoy. But right now, before you even do that, to tho the Amazon page and find the negative reviews. There are only two now (the book just came out) but they are a hoot.
First, let’s get this one thing out of the way. How do you pronounce “SQL.”
Donald Chamberlin, the co-developer of SQL, pronounces it by saying the letter out louse. Ess Cue Ell. However, many computer science teachers prefer “sequel” and in at least one poll, the latte won out. One of the most common implementations of the database language is mySQL, and that piece of software is officially pronounced “My Ess Cue Ell” and not “Mysequel.”
I myself have never once uttered the word “sequel” when referring to this database system. I have also never once uttered either the term “Jiff” or “Giff” in relation to *.gif files. They are, to me, “Gee Eye Eff” files. I admit, however, to calling *.jpg files “Jay pegs” even when they are not *.jpeg.
But I digress. We are here to talk about a new book, on SQL.
The book is Practical SQL: A Beginner’s Guide to Storytelling with Data by the award winning journalist Anthony DeBarros. DeBarros is as much of a writer as he is a database geek, which gives this book a pleasant twist.
The book provides what you need to know to create databases and set up relationships. But don’t get excited, this is not a dating book.
See, a “database” isn’t really a thing, but a collection of things. Normally, at the root of a database is a set of tables, which look like squared off sections of spreadsheets, or highly organized lists, if you lay them out. But then, the different fields (columns) of the tables are related to each other. This is important. Let’s say you have a table of individuals in your club, and each individual has a set of skills they bring to the table. It is a model railroad club, so you’ve got engineers, artificial vegetation experts, landscape sculptors, background and sky painters, and so on. Also, each club member has a known set of days of the week and hours that they are available to meet or to manage some event you are having. Plus, they each have lunch food and drinks preferences for when you order out. Three of the members drive wheelchairs. And so on.
You have a table of dates and times that will be when your club will meet over the next year. You have a list of venues you will meet in. Each venue is associated with a different deli where you order out. Some of the venues are not wheelchair friendly, while some are.
Imagine putting together a big chart that shows all the events, who is going to them, what everyone will eat, what everyone will do, and special needs requirements, for the next ten years.
If that was one single giant structured table, each time a given member was included on a sublist because he or she, there would also be all the information about the person’s address, phone number, email, food preference, skill, etc. etc.
So you don’t do that. Instead, the database is taught to associate the name of each member with that member’s personal file, including all that personal information, in a way that lets you selective ignore or include that information. Then, the database lets you construct new, novel, virtual tables that combine the information in a clever way.
For instance, for an upcoming event, you can have a to-do list that includes which materials to order for a build of a new model, and whether or not the person who helps Joe with the wheelchair thing should be sent a note to remind him to definitely come, and a precise list to send to the corner deli, as well as the phone number of the deli, for lunch, and so on.
Tables, linked together with relationships, which are then mined to make these novel tables which are called queries.
You may need to import data, export data, clean up errors, you may be using a GIS system, creating automatic emails or mail merge documents, and at some point you might even want to analyze the data.
Practical SQL: A Beginner’s Guide to Storytelling with Data tells you all the stuff you need to do in order to carry out these tasks. As is the usual case with No Starch Press books, the code that is used in the book is downloadable.
The book assumes you are using PostgreSQL, which is free (and there are instructions to get it) but all SQL systems are very similar, so that really doesn’t matter too much.
Everybody who works with data should know some SQL. All desktop operating systems (Linux, MacOS, Windows) use this sort of software and it runs about the same way on all of them. Just so you know, you are using SQL now reading this blog, because SQL or something like it lies at the base of pretty much every common way of serving up web pages. Prior to you clicking on the link, these very words were in a database file, along with the name of the post, a link to the graphic used, etc. etc. A bit of PHP code accessed the data from the SQL database and rendered it into HTML, which was then fed to your browser. SQL is one of those things that lies at the root of how we communicate on line, and the basics of how it works and what you can do with it have not changed in a long time. The first relational models go back to 1970. Remember “dbase”? That was an early version, deployed in the early 1980s. By the mid 1980s, everything you can do with modern SQL, to speak of, was implemented.
Enjoy and learn from Practical SQL: A Beginner’s Guide to Storytelling with Data.
Belize, Guatemala, Honduras, El Salvador, Nicaragua, Costa Rica, and Panama make up Central America. Notice that had I not used the Oxford Comma there, you’d be thinking “Costa Rica and Panama” was a country like Trinidad and Tobago. Or Antigua and Barbuda. Or Bosnia and Herzegovina. Anyway, those countries have about 1261 species of birds, and the newly minted Birds of Central America: Belize, Guatemala, Honduras, El Salvador, Nicaragua, Costa Rica, and Panama (Princeton Field Guides) by Andrew Vallely and Dale Dyer covers 1,194 of them (plus 67 probably accidentals). Obviously, many (nearly all) of those birds exist outside that relatively small geographic area, up in to North America and down into South America. But I’ll remind you that there are some 10,000 bird species, so this region has a bird list that represents 10% of that diversity. Nothing to shake a beak at.
This is a classic Peterson/Petrides style guide, with the usual front matter about bird id, geography, habitats, etc. Species draswings are on the left leaf while descriptions and range maps on the left. The drawings do not have Peterson Pointer lines, but there are a lot of drawings to clarify regional versions and life history stages. In fact, the attention to regional variation is a notable and outstanding feature of this file guide.
There is also an extensive bibliography with over 600 references. The book is medium format, not pocket but not huge, and just shy of 600 pages long. Also, last time I clicked through it was on sale. Know somebody going to Central America over winter break? Get this for them as their holiday gift!
Like the Princeton guides tend to be, this is a very nice book, well written, well constructed, and likely to become the standard for that region for the foreseeable future.
When the Uncertainty Principle Goes to 11: Or How to Explain Quantum Physics with Heavy Metal is a new book by the amazing Philip Moriarty. You may know Moriarty from the Sixty Symbols Youtube Channel.
You can listen to an interview Mike Haubrich and I conducted with Philip Moriarty here, on Ikonokast. Our conversation wanders widely through the bright halls of education, the dark recesses of of philosophy of science and math(s), the nanotiny, and we even talk about the book a bit.
Moriarty, an experienced and beloved teacher at the University of Nottingham, uses heavy metal to explain some of the most difficult to understand concepts of nano science. Much of this has to do with waves, and when it comes to particle physics, wave are exactly half the story. This idea came to him in part because of what he calls the great overlap in the Venn Diagram of aspiring physicists and intense metal fans. Feedback, rhythm, guitar strings twanging (or not), are both explained by the same theories that help us understand the quantum world, and are touchstones to explaining that world.
I’ve read all the books that do this, that attempt to explain this area of physics, and they are mostly pretty great. When the Uncertainty Principle Goes to 11 does it the best. Is this because it is the most recent? Does Philip Moriarty stand on the shoulders of giants? Or is it because the author has hit on a better way of explaining this material, and thus, owes his greatness to the smallness of his contemporaries? We may never know, but I promise you that When the Uncertainty Principle Goes to 11 is a great way to shoulder your way into the smallness of the smallest worlds.
As you will understand if you check out the Ikonokast interview, Moriarty has taken the risk of using math in this book. The math is straight forward and accompanied by explanation, so you do not have to be a math trained expert to use it and understand. Most importantly, while Moriarty uses music, metal, and other real life things to explain quantum physics, these analogies are more than just analogies. They are examples of similar phenomena on different scales. As Philip told me during the interview, we don’t diffract when we walk walk through a doorway, because the things that happen on nano scales don’t scale up. But wave functions function to pick apart both quantum mechanics and Metallica, so why not explore guitar strings, feedback, and mosh pits together with condensed particle physics?
I strongly recommend this book. Just get it, read it. Also, the illustrations by Pete McPartlan are fun and enlightening. Even if you think you understand quantum physics very well already, and I know most of my readers do, you will learn new ways of thinking or explaining.
Philip Moriarty is a professor of physics, a heavy metal fan, and a keen air-drummer. His research focuses on prodding, pushing, and poking single atoms and molecules; in this nanoscopic world, quantum physics is all. Moriarty has taught physics for more than twenty years and has always been struck by the number of students in his classes who profess a love of metal music, and by the deep connections between heavy metal and quantum mechanics. He’s a father of three — Niamh, Saoirse, and Fiachra – who have patiently endured his off-key attempts to sing along with Rush classics for many years. Unlike his infamous namesake, Moriarty has never been particularly enamored of the binomial theorem.
I am strongly recommending Amazing Arachnids by Jillian Cowles.
This book is in line to win the Greg Laden’s Blog Science Book of the Year.
It looks like a high quality, almost coffee table like, book on the arachnids, things like mites and spiders and such. But that is only what it appears to be on the surface. Just below the surface, it is a compendium of evolutionary amazingness, a detailed description of the photogenic history, behavioral biology, and co-evolution of plants and animals, with almost all the protagonists in the numerous loosely connected stories being one sort or another of amazing arachnid.
Geographically, the book focuses on the arid American Southwest. This allows the author to be quasi-comprehensive in coverage of species (about 300 from among 11 orders). It also allows the author to tell the story of these critters as a story, with interconnected features of evolution and ecology. This is literary hard core science, with great illustrations (about 750 color photos, and other illustrations).
Because of the US SW focus, it might be a better purchase for people living in just that area. But as is the case with a handful of other nature-oriented books, like the The New Neotropical Companion, the science content and overall interest of the book transcends geography. You’re not really going to want to get that close to these arachnids anyway….
This is a very good book. You will learn things, even if you already know a lot about arachnids.
The author is a clinical microbiologists and photographer.