A Reddit thread in the Skeptic subreddit is framed as criticism toward skeptical philosophy. The questions it raises are all important, and honestly the poster should have just framed his points as questions rather than criticisms, because they reflect not problems with skeptical philosophy but their poor understanding of it. So the first lesson here is – humility. Don’t assume that an entire field you don’t fully understand is wrong. Rather, start with the assumption that you have more to learn, and then let proponents make their best case.

There are many good responses in the thread, which shows that a reasonable understanding of skeptical philosophy is out there in the community. The questions are very common beginner errors, and so they are worth responding to in detail. My first response, however, (as others in the thread have pointed out) is to begin with a basic text of the subject. Read a philosophy book. I humbly suggest The Skeptics’ Guide to the Universe, which is designed to be a primer on skeptical philosophy and directly addresses all of the poster’s questions. But there are many good books out there, and even basic philosophical books on epistemology will do (they don’t have to be explicitly skeptical).

I point this out because I frequently encounter people who are trying to do philosophy without even realizing it, or without an appreciation for the depth of philosophy as an intellectual field. Philosophy is one of those things that everyone thinks they can do, even without a lick of education on the topic. Inevitably they make basic mistakes, often ones that were dealt with thousands of years ago by the first philosophers. This would be no different than making pronouncements about a highly technical field of science without ever having studied it, and without really knowing the position of experts.

He begins:

‘Fact’ – What is a ‘fact’? Google search says: “a thing that is known or proved to be true”. Here is my problem: ‘known’…by whom? I am from India and have seen both villages and towns. Different things are ‘known’ in different communities. For example, people in rural areas ‘know’ there exists witches and ghosts.

This is a basic question of epistemology – how do we know anything, and what does it mean to know something? Here is also a pearl – don’t rely on essentially a dictionary definition for insight into a technical term or concept.

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I turns out they were only “mostly dead.” Well, it depends on your definition of death.

This is an interesting study that has been widely reported, with a surprisingly small amount of hype. The New York Times writes:

‘Partly Alive’: Scientists Revive Cells in Brains From Dead Pigs
In a study that upends assumptions about brain death, researchers brought some cells back to life — or something like it.

All the reporting I have seen so far has appropriate caveats, but they are really trying hard to maximize the sensational aspects of this study. I actually wrote about this study one year ago when the data was first presented. Now it has been published, so there is another round of reporting (which interestingly ignores the prior reporting).

The quick version is that Yale neuroscientists collected decapitated pig brains four hours after death and then tried to keep the brain cells alive in order to see what would happen. It’s actually a great real-life Frankenstein type experiment, a fact not missed by some outlets. Here is what they did: Continue Reading »

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Every time I heard someone use the term “witch hunt” recently I was reminded of that quote from Indigo Montoya from The Princess Bride – “You keep using that word. I do not think it means what you think it means.” With the recent release of the Mueller report, many news outlets feel obliged to interview people on the street about their opinions. This is an inane practice that provides no useful information, just cherry-picks random opinions. Every single time I heard the term “witch hunt”, it was used incorrectly.

It’s not just random people who do not understand the term. Because Trump has used the term over 260 times and counting to refer to the Mueller probe, many political commentators have also been using the term – mostly incorrectly. Dana Milbank, for example, wrote in the Washington Post:

Just because Trump says something, however, doesn’t automatically mean it’s wrong. The treatment of Trump by special counsel Robert S. Mueller III and other investigators does have characteristics of a witch hunt. This is because Trump has characteristics of a witch.

So says a leading authority on the history of witchcraft, Thomas J. Rushford, history professor at Northern Virginia Community College in Annandale. In an anthropological sense, Trump “is really quintessentially a witch figure,” the professor tells me, and if what is happening to Trump is a witch hunt, “it is only in a good sense, that is, this is society policing the boundaries that they believe to be ethically and morally right.”

But there is no witch hunt “in a good sense.” This misunderstands the essence of what a witch hunt is. The logic here is that if Trump is analogous to a witch, then the investigation was a witch hunt. Or, on the other side, if Trump is innocent of collusion, then by definition the investigation to determine whether or not he is guilty is a witch hunt. One random interviewed person even said that because the probe found no evidence of collusion it was a “failed witch hunt.”

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Marcelo Gleiser is an astrophysicist and science popularizer. I have not read any of his works previously and was therefore not familiar with him. He recently won the Templeton Prize, of which I am not a fan. The prize is for:

The Templeton Prize honors a living person who has made an exceptional contribution to affirming life’s spiritual dimension, whether through insight, discovery, or practical works.

Many past winners were given the award for trying to align science and religious faith, which to me is a hopeless cause. This usually results in an attempt to use science or philosophy to prove a particular religious belief, an endeavor that always fails. It’s fair to say, then, that I had negative expectations when I saw this headline in Scientific American:

Atheism Is Inconsistent with the Scientific Method, Prize-Winning Physicist Says.

Here we go, I thought, another Templeton Prize winner trying to disprove atheism. But I read the interview with an open mind to see what he actually had to say, reminding myself of the principle of charity. I was pleasantly surprised. I have to say I found nothing I could disagree with.

First, that headline is misleading (I know, shocker). Gleiser is not an atheist, but only because he is an agnostic. He explains that the notion of whether or not a god exists is beyond evidence, and therefore the only scientific opinion one can have is agnosticism. You cannot know that God, or any particular god, does not exist in a scientific way.

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One of the core concepts in my book, The Skeptics’ Guide to the Universe, is that humans are inherently good at certain cognitive tasks, and inherently bad at others. Further, our cognitive processes are biased in many ways and we tend to commit common errors in logic and mental short-cuts that are not strictly valid. The human brain appears to be optimized by evolution to quickly and efficiently do the things we need to do to stay alive and procreate, and this has a higher priority than having an accurate perception and understanding of reality. (Having an accurate perception of reality has some priority, just not as much as efficiency, internal consistency, and pragmatism, apparently.)

One of the things humans are not generally good at is statistics, especially when dealing with large numbers. We have a “math module” in our brains that is pretty good at certain things, such as dealing with small numbers, making comparisons, and doing simple operations. However, for most people we quickly get out of our intuitive comfort zone when dealing with large numbers or complex operations. There is, of course, also a lot of variation here.

We give several examples to illustrate how people generally have poor intuition for statistics and certain kinds of math, and how our understanding of math runs up against our cognitive biases and flawed heuristics. These common examples include the fact that we have a poor intuitive grasp of randomness.

Probability also seems to be a challenge. How many people would you have to have in a room before having a >50% chance that two of them share the same birthday (not year, just day)? The answer is a lot less than most people guess – it’s just 23. We tend to underestimate how probabilities multiply when making multiple comparisons. This is why we are inappropriately amazed at coincidences. They are not as amazing as we naively think. The probability of someone winning the lottery twice is also a lot higher than you might think.

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The skeptical movement has always struggled with some unavoidable ironies. We are like a group for people who don’t like to join groups. We actively tell our audience not to trust us (don’t trust any single source – verify with logic and evidence). Our belief is that you really should not have beliefs, only tentative conclusions. Essentially, our ideology is anti-ideology.

This is because scientific skepticism is not about any set of beliefs or conclusions. It is all about process, just like science itself – question, observe, analyze, repeat.

This approach is both empowering and freeing. One of the most common observations I hear from those who, after consuming skeptical media for a time, abandon some prior belief system or ideology, is that they feel as if a huge weight has been lifted from their shoulders. They feel free from the oppressive burden of having to support one side or ideology, even against evidence and reason. Now they are free to think whatever they want, whatever is supported by the evidence. They don’t have to carry water for their “team”.

At the same time, this is one of the greatest challenges for skeptical thinking, because it seems to run upstream against a strong current of human nature. We are tribal, we pick a side and defend it, especially if it gets wrapped up in our identity or world-view.

All of the recent hand-wringing about fake news and a post-fact world is largely about an increase in this partisanship. People use motivated reasoning to defend their ideology against the intrusion of reality, and hyper-partisanship leads to hyper-motivated reasoning. It’s also about echochambers – ideological bubbles of information that reinforce our tribe and demonize all others. These echochambers are essentially institutionalized motivated reasoning, prepackaged misinformation and rationalizations.

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OK – this is my new favorite word: epistocracy. I first encountered it reading an article about attempts by the Indian government to control what passes for knowledge. It has the same root as “epistomology” – which is the philosophy of knowledge, or how to legitimately separate opinion from fact.

Epistocracy is essentially rule by the knowledegable. It is a relatively new term (the oldest reference I could find was from 2015), and replaces an older term, noocracy (dating from the 1930s). It refers to any system in which voting rights are restricted by some measure of intelligence or knowledge.  The most recent advocacy for epistocracy was by Georgetown University political philosopher Jason Brennan, in his controversial book, Against Democracy.

The idea is that we already restrict voting rights, excluding those who are too young, are convicted felons (in some states), are mentally ill or cognitively impaired, or are naturalized citizens until they pass a civics test. So why have an arbitrary age cutoff, which is presumably to limit voting by citizens who are too young to have sufficient knowledge and judgment? Why not just test civic knowledge and let that be the criterion? Why should someone ignorant of politics have the same right to vote as someone who has invested the time and effort to reasonably understand the issues of the day?

To be clear – I think epistocracy is a horrible idea. I am not the first to point out that any such system would not only be ripe for abuse, it is practically a guarantee. Those in power could set the rules to favor those in power (they already do this – why make it easier). This would establish a self-reinforcing system of rule by a class of elites, with a patina of philosophical legitimacy.

In fact this has already been happening – from the moment, for example, that African Americans were given the right to vote, their political power was limited by epistocratic laws such as requiring literacy tests to register to vote. Voting rights legislation was required to strike down such laws.

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Do we have real free will, and perhaps more importantly, what are the moral implications of belief in free will? These are interesting questions that are sure to prompt vigorous debate when they come up.

I have discussed the first question before, in which I take (shocker) a neuroscientific approach. From everything we know about brain function, our experience of our own existence, including what we perceive and the apparent choices we make, are largely a constructed illusion. Many times we feel as if we are making a conscious choice, but we can see in the brain that the choice was actually made subconsciously before we are even aware of it.

Even when the choice is made consciously, meaning we are aware of the factors that are affecting the decision, that does not mean we have truly free will. The brain is still a machine, and is dependent upon the laws of physics. A stone does not have free will to choose its path as it rolls down a hill. Its path is entirely determined by physics. Some argue that brain processes are no different, just orders of magnitude more complex.

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There is a seemingly endless debate about whether or not, and how, male and female brains differ. This is also an extension of the also endless nature vs nurture debate.

Unfortunately these questions get tied up with social, political, and ideological questions. I say unfortunately because they really shouldn’t be. Ideally we can ethically recognize that the optimal position is to respect every human’s rights and dignity. Everyone should be afforded the same basic rights and opportunity to pursue their potential and desires.

This ethical position can be valid even if it turns out to be true that not every human being is identical in terms of their potential or inclinations, or whether or not there are identifiable subgroups of people. These are scientific questions that should be approached and answered scientifically.

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A recent opinion piece in the New York Times by Krista Burton is perhaps one sign of recent social trends – increasing belief in things like astrology, especially among millennials. Burton provides some insight into this phenomenon, but then also makes some horrible justifications for it.

Belief in astrology, the notion that the relative positions of planets and start affect our personality and perhaps our destiny, has been measured at about 25% in the UK, Canada and US in recent decades. However, as researchers, Nicholas Campion, points out, the number depends greatly on what exactly you ask:

In one of my groups – of mostly male students aged 18 to 21 – I found that 70% read a horoscope column once a month and 51% valued its advice. Other questions produced a huge variation: 98% knew their sun sign, 45% thought it described their personalities, 25% said it can make accurate forecasts, and 20% think the stars influence life on Earth. The higher figures are close to previous research which showed that 73% of British adults believe in astrology, while the lowest figures are similar to those found by Gallup’s polls.

It’s difficult to know how to parse all of that, but it seems like about half of people take astrology seriously to some extent, and 20-25% very seriously. That is a significant percentage of the population to believe in something which is 100% superstitious nonsense. Let’s get this out of the way now – there is no plausible mechanism by which astrology could work, there is no evidence that any form of astrology does work, and it is structured and functions like a classic pseudoscience. A moderate amount of scientific literacy, and a trace of critical thinking skills, should be enough to purge any belief in astrology.

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