Skip to main content

Correlation is not causation

Humans tend to seek causal link between events that always or generally occur together.  "Correlation is not causation" or "correlation does not imply causation"  is a phrase in statistics or science, in general, to warn against this fallacy.  Even smart people tend to make this mistake.  Hence, this phrase has gained importance.

Due to its importance, people have come up with various examples illustrating the mistake.  Surprisingly, among all the examples I have seen, a movie dialogue did the best job, at least in my opinion.  This is a dialogue from one of the many brilliant comedy scenes from the Malayalam film Punjabi house.

In the film, one of the characters says "I do not eat chapati and hence I do not know Hindi".  Eating chapati and knowing Hindi is certainly correlated.  Chapati is predominantly a food of North India and Hindi is a language of North India.  However, as is obvious to all of us, there is no causal link.  Hence, the dialogue is funny.  Can you find a better illustration?      

Comments

Popular posts from this blog

Naruto; the saddest death

For me, the saddest death in Naruto, is undoubtedly, Yashamaru's death. Let me say a few words about why I think so. For me death by itself is not sad. I would in fact say that death is a blessing for the one who is dying. It is sad for those who are left behind. From that perspective I think Yashamaru's death is the saddest. Yashamaru was the only comforting figure in the life of Gaara. The moment it is revealed that the assassin who tried to kill him was that same Yashamaru was heart breaking. The way Gaara cries "Yashamaru.." still resonates in my mind. Loneliness is one of the central themes of the anime. And, that scene captures it so magnificently. One of the most touching moments in the anime. There are several other deaths for which I shed a lot of tears. Like the deaths of Haku or Zabuza or Jiraiya or Obito. But they truly shine through their deaths. As Jiraiya himself says "The true measure of a shinobi is not how he lives but how h

The Good Place

The good place is a great entertainer - especially the first season. The climax of the first season was the highest point for me. Things did start going downhill (in my personal opinion) but the show managed to keep me hooked till the end. I certainly wanted to know how the show ends. However, I have some beef with the basic premise of the show - it is either flawed or they took the easy route. To discuss these issues, I will, unfortunately, have to divulge the intricate details of the show. So, needless to say, this post is full of spoilers . So, if you plan to watch the show, it would be better if you read this article after you finish watching the show. Else, the article might give a neat summary of the interesting ideas in the show. The basic premise of the show is that the criteria for deciding who goes to the good place are flawed. The main justification for the claim comes from two observations: For the last 500 years, no one has been to the good place (think heaven

Kettiyollaanu Ente Maalakha

Kettiyollaanu Ente Maalakha is the story of Sleevachan (Asif Ali), a good-natured individual ignorant of the ways of romance and sex.  Although he had avoided marriage until 35, he decides to marry to care for his ageing mother.  The rest of the movie is about his struggles in the journey forward. I would like to get a bit into the story as some of it begs discussion.  Thus, there will be some spoilers, but I believe they would not really spoil anything. Soon after fixing the marriage, he starts panicking.  He even confesses to the local priest that he is feeling stressed because of his ignorance.  However, the priest casually dismisses these worries.  After marrying Rincy, he is unable to initiate a physical relationship, causing even more stress.  Sleevachan's struggles were cracking up people all around me, and I felt, perhaps that was the director's intention.  Those very same scenes were, however, making me extremely uncomfortable.  Stealing Naruto's words, &quo