The biased sample: why science should not be practised on friends
The biased sample is a kind of unrepresentative sample, either for quantitative reasons (as is the case with the too-small sample), or for qualitative ones, when its structure does not represent the structure of the real population that is the object of the research.
In the world of “what if” | Why we are drawn to counterfactual thinking
The ability to imagine alternatives to events that have already occurred distinguishes humans from other creatures and machines—artificial intelligence has not yet succeeded in creating a device that can devise counterfactual scenarios. The fact that we can travel in an imaginary time and rewrite our actions and their outcomes can prove to be an advantage or can lead to dysfunctional emotional and cognitive...
Biased statistics and false truths
A few years ago, the American Statistical Association carried out research on the history of statistics, tracing their use throughout the course of human society’s development. The results of the study are displayed in the form of a chart called the Timeline of statistics, available on the association's website.
Appeal to ignorance: Why it is useless to hide behind your finger
The appeal to ignorance (argumentum ad ignorantiam) is an error in thinking which argues that a conclusion is true because there is no evidence against it, or that a conclusion is false because there is no evidence in its favour.
Manipulation: when disinformers believe in us
When we think we are immune to disinformation, we become easy prey for those who manipulate us.
Conspiracy theories, fake news and the truth that “sets us free”
Conspiracy theories and fake news are not the same thing, although the two categories have much in common.
How to critically evaluate a text
Almost a century ago, writer Virginia Woolf noticed people’s tendency to approach books “with clouded and divided minds, asking fiction to be true, poetry to be false, biographies to be flattering and history to chime with prejudices.”
Reading polls: How do we evaluate surveys carefully?
Many news programmes, speeches, or press articles refer to at least one poll. When designed and conducted well, polls are an excellent means of measuring public opinion on a particular topic. Unfortunately, not all surveys are well compiled, relevant, representative, or honest.
How to study the Bible properly
Do your best to present yourself to God as one approved, […] who correctly handles the word of truth. (2 Timothy 2:15)
Seduced by conspiracy theories
We live in a polarised world where conspiracy theories proliferate, but some people are more inclined than others to consume and propagate these theories rather than ignore or demystify them.
Accurate statistics and faulty interpreters
Even the most rigorously researched statistics are not immune from misinterpretation, and they can often be used in a way that obscures the truth.
How to think outside the box
"Happiness is not in the mere possession of money; it lies in the joy of achievement, in the thrill of creative effort." (Franklin Delano Roosevelt, US President)
Equivocation: Playing hide-and-seek in communication
When what someone says can be interpreted in multiple ways, we are in danger of coming to an understanding which is different to their intended message.
The false dilemma: Are there really only two choices?
The false dilemma fallacy presents an issue as if there are only two ways to solve it—often, two opposite ways—when, in fact, there are more ways than that. The conflict between the two ways presented is also false.
The appeal to tradition or the risk of repeating history
In our everyday lives we often resort to simply repeating what has been said or done before. But not everything that is old is authentic or correct. When we refer to tradition with full confidence that the way it was understood and acted on in the past is self-evident, we are committing the logical error of appealing to tradition, or false induction.


























