I don’t know much about astronomy, but I am a scientist and I know this. One key scientific concept that is rarely grasped by non scientists but at the same time drives much of science itself is variation.
Indeed, the understanding that variation is key is one of the characteristics that separates the ancients, who may have engaged in what looks like science but rarely advanced true understanding, and the moderns (to oversimplify greatly, ironically).
The moon and other celestial bodies always do the same thing, never change in their course or appearance, and once one has finished cataloguing them, there is nothing else to see.
Or is there? Isn’t there in fact change all the time? Isn’t change itself the essence of the universe? Is it not true that a star is a dynamic thing that has a birth, stages of life, a death, and from its remnants come other things? Isn’t this how astronomers like Neil DeGrasse Tyson are able to utter such brilliances as “I am made of star dust”??? Don’t planets form, collide with things or things with them, cool, change dramatically across the surface, even break lose form their orbits now and then? Continue reading Why Neil deGrasse Tyson is Wrong about the Supermoon
Yes, of course, you need a person (usually) to pull the trigger. But it is abundance of and ease of access to guns that causes the United States to be off the charts in woundings and killings from firearms. This is what the research has shown for a very long time and continues to show. Here, I’ll give you yet another example. All of the following text, and the tables, are exerted directly from the paper. Continue reading Falsehood: “People, not guns, kill people”
Voting is not party involvement.
We hear a lot of talk these days about “voters” being repressed in their attempt to be involved in the Democratic primary process. There may be something to that, and it might be nice to make it easier for people to wake up on some (usually) Tuesday morning and go and vote in a Democratic or Republican primary or visit a caucus. But there is a difference between a desire for a reform and the meaningful understanding of that reform — why we want it, how to do it, and what it will get us — that makes it important to do what we Anthropologists sometimes call “problemetizing the concept.”
We can start with the statement that in the primary system, “Voters should not be kept from involvement by rules that make it impossible for them to engage in the democratic (small “d”) process.” That sentence seems reasonable, even important, and is essentially a call for open, instead of closed, primaries, or in some cases, for replacing a caucus with a primary. Continue reading Falsehood: “Voters are kept from political involvement by the rules”
It is generally thought that life expectancy in the past was less that it is today for our species as a whole and in the case of industrialized countries in particular. However, this belief counts as a falsehood not because it is untrue (it is, in fact, true) but because many people get this idea wrong in a few different ways. People often:
1) confuse life expectancy with lifespan;
2) underestimate the life expectancy of many past populations; and
3) think of the past compared to the present as a dichotomy, the present being one way, the past being the other way, failing to recognize diversity and variation in life history variables across our species and across time … life expectancy is seen as a measure of quality of life (which it may well be) that has tracked the one way progress of the human condition from a widespread past condition of short-lived misery to the present and much improved condition of living long and prospering.
Continue reading Falsehood: “If this was the Stone Age, I’d be dead by now”
According to one of the leading experts on the human circulatory system, blood flowing through veins is blue.
I’m not going to mention any names. All I’ll say is this: A person I know visited a major research center last year and saw a demonstration of organ removal and some other experimental stuff. A person also visiting asked the famous high-level researcher doing this work if blood was ever blue. What he said was not recorded in detail, but it was very much like this statement I found on the Internet:
… human blood is red as soon as it is oxygenated. Blue blood flows through veins back to the heart and lungs…..
[source: Some Guy on Yahoo Answers]
My friend was disturbed by this, as s/he had been teaching high school students for years that blood is not blue. Her understanding of the situation was that people thought blood was blue because standard anatomical drawings and models depict arteries as red and veins as blue, and because if you look at your veins they are blue. Obviously veins are not clear, but if you don’t think that out you might assume that you were seeing blue blood.
Continue reading Is Blood Ever Blue? Science Teachers Want to Know!
As is the case with any good falsehoods, one can never really be sure what the falsehood may actually be. In this case, there are two falsehoods: 1) When we see a statistical correlation between two measurements or observations, we can not assume that there is a causal link from one to the other. This is the way the statement “Correlation does not imply causality” or some similar version of that aphorism generally means, and this is an admonishment we often hear; and 2) When we see a statistical correlation between two measurements or observations, there probably is a causal link in there somewhere, even when we hear the admonishment “Correlation does not imply causality” from someone, usually on the Internet. To put a finer point on this: What do you think people mean when they say “Correlation does not equal causality?” or, perhaps more importantly, what do you think that statement invokes in other people’s minds?
Continue reading Falsehood: Correlation Implies/Does Not Imply Causality
I’m sure you all have cable and/or satellite setups and thus see the Mythbusters, which is clearly one of the best things on TV, as they produce them. But I am always a couple of years behind because I watch them on Netflix. Two more seasons were released on Netflix very recently, so I’ve been watching them, and I thought one of the Myths addressed was worth bringing up.
Here’s the Myth: Continue reading Mythbusters on Head-on Collisions
Update: Long after I penned this essay, Cambridge MA (which is not Boston but is near and different from Boston) renamed Columbus Day “Indigenous People’s Day.”
The photograph above is of the Columbus Statue in the North End, doused with red paint in 2006.
Columbus Day has become a holiday of disdain, and there are many people who feel it should be taken off the books. It is a little like the Martin Luther King Jr. day maneno in reverse. If you were a progressive thoughtful American you’d have supported having a state-wide Martin Luther King Jr. day, and probably also a street named after the highly influential slain civil rights leader. If, on the other hand, you were a Republican and/or racist white supremacist type (and there are a lot more of those than gentile people like to admit) than you’d have come up with some lame excuse for not having a Martin Luther King Jr. day or a Martin Luther King Jr. Avenue in your state or town. When the Federal version of MLK day was being debated in congress, it was the likes of Jesse Helms who opposed it. Numerous states resisted adding MLK day, and it was not until the year 2000 that all states in the US celebrated the only US holiday for the birth of a famous person who was not white by actually taking the day off.
Continue reading That Columbus Day is Evil: A truth and a falsehood
The original post generated a lot of comments, including from expert historians who strongly disagreed with my post. I put those comments at the bottom of the post so you can see them. I am sticking to my story that the consideration of people murdered as witches should include the 13th century, and does not for reasons having more to do with quirks of the practice of history than to the behavior of the Europeans at the time. I also maintain that typical estimates accepted by historians are by nature conservative.
Now, on to the original post:
Continue reading How many people were killed as Witches in Europe from 1200 to the present?
How long is a generation, you ask?
Short Answer: 25 years, but a generation ago it was 20 years.
Long answer: It depends on what you mean by generation.
In US-biased Western culture there is a Biological Generation, the Dynamic Generation, the somewhat different Familial Generation, what is sometimes called a Continue reading How long is a human generation?