Mental Models

Latticework of Mental Models: Variable Reinforcement

May 27, 2015 | 22 Comments

It’s not often that you would find me exercising my thumb muscles with a TV remote but it so happened that on a Saturday afternoon while killing time in front of the idiot box, an unsettling thought caught me off guard. I realized that I had been surfing through the TV channels for the past hour without really spending more than a minute on any single channel.

This habit is not uncommon but the unusual thing was once I had looped through all the channels a couple of times and once it was obvious that there was nothing interesting on TV, I still kept going without getting bored. So what was keeping me hooked?

As a flash of insight the answer that my mind constructed was an uncomfortable one.

Latticework of Mental Models: Gresham’s Law

May 21, 2015 | 18 Comments

This article is the fifth of this weekly series called Latticework of Mental Models, which will be authored by my friend and partner in writing the Value Investing Almanack, Anshul Khare. Anshul will write on various mental models – big ideas from various disciplines – which can help you think more rationally while analyzing businesses and making your stock investment decisions.

Few weeks back, we discussed the mental model of Storytelling. I am going to use the same model to start this post. Let me start with a true story, and take you back to medieval India.

Between the years 1324 to 1351, Delhi was ruled by an emperor named Mohammad-bin-Tughluq from the Tughluq dynasty. He had a scholastic background and spoke multiple languages. In spite of good intentions, some of the policies that he enforced during his rule backfired which made him infamous as an eccentric ruler. One such failed idea was about an experiment that he did with the local currency.

Tughluq noticed that India had very few silver coins and a comparatively larger number of bronze and copper coins. He decided to promote bronze or copper coins by passing a royal order that bronze and copper coins are to be accorded the same value (i.e., same purchasing power) as silver coins. In other words, he wanted the markets to mentally consider bronze and copper as silver itself so that 1 gram coin of bronze can buy the same goods as 1 gram of silver. It looked like a neat idea however the emperor failed to consider the law of unintended consequences.

Latticework of Mental Models: Mean Reversion

May 13, 2015 | 16 Comments

This article is the fourth of this new weekly series called Latticework of Mental Models, which will be authored by my friend and partner in writing the Value Investing Almanack, Anshul Khare. Anshul will write on various mental models – big ideas from various disciplines – which can help you think more rationally while analyzing businesses and making your stock investment decisions.

There are certain days in everybody’s life which in spite of being ordinary remain etched in the memory for a long time. It was 15th of December. I distinctly remember it because I bought my car that day.

The ownership of new car brought with it an excitement to take care of it which included an urge to diligently track the car mileage. You know, boys with toys. At an average of 13 km/litre it was a satisfactory performance. However, after few weeks I started noticing that the mileage numbers would go down occasionally and then come back again to the normal.

There wasn’t any change in my driving style or driving routes. Except the source of fuel there was no other variable that could cause the variation in performance. So my hypothesis was that the quality of fuel was affecting my vehicle’s performance. To empirically validate my theory I decided to keep track of different fuel stations where I got the petrol from.

Latticework of Mental Models: Storytelling

May 6, 2015 | 10 Comments

This article is the third of this new weekly series called Latticework of Mental Models, which will be authored by my friend and partner in writing the Value Investing Almanack, Anshul Khare. Anshul will write on various mental models – big ideas from various disciplines – which can help you think more rationally while analyzing businesses and making your stock investment decisions.

What if I told you that the DCF (discounted cash flow) analysis and the principle of time value of money was first discovered in 600 B.C.? And the person who discovered it was neither an economist nor a mathematician. He was a storyteller called Aesop.

“You must be kidding,” you might say. Well, let’s find out.

In my personal experience, one of the most effective ways to make a conversation (written or verbal) interesting is to tell a story capturing your idea. In fact, I can safely claim that whenever I hear or read something that starts with “let me tell you a story,” it gets me hooked for at least few minutes. I am sure your experience won’t differ too much from mine.

Even most of the holy texts in different religions contain lot of stories. Questions is, why is it so?

Latticework of Mental Models: Occam’s Razor

April 28, 2015 | 8 Comments

This article is the second of this new weekly series called Latticework of Mental Models, which will be authored by my friend and partner in writing the Value Investing Almanack, Anshul Khare. Anshul will write on various mental models – big ideas from various disciplines – which can help you think more rationally while analyzing businesses and making your stock investment decisions.

Have you ever wondered why Mark Zuckerberg (founder of Facebook) always wears the same grey t-shirt? Do you remember Steve Jobs’ black turtleneck that he wore for all his stage appearances?

These billionaires could afford anything in the world. Then what’s going on here? I’ll give you a moment to think about it and come back to it later in this post.

Last week, we delved into the characteristics of complex systems and discussed few ideas to protect ourselves from unintended consequences produced by complex adaptive systems.

However, just because we have discovered a tool to address a problem doesn’t mean that we should go on using it for every problem. Charlie Munger nailed it when he said –

To a man with hammer everything looks like a nail.

We don’t want to be that ‘man with hammer’. So what am I suggesting here?

Perhaps you have heard it numerous times before but let me just make you read it once more – “An ounce of prevention is better than a pound of cure.”

How about dealing with a situation just by avoiding it?

Latticework of Mental Models: Complex Adaptive Systems

April 21, 2015 | 27 Comments

This article is the first of this new weekly series called ‘Latticework of Mental Models’, which will be authored by my friend and partner in writing the Value Investing Almanack, Anshul Khare. Anshul will write on various mental models – big ideas from various disciplines – which can help you think more rationally while analyzing businesses and making your stock investment decisions.

Let me share with you two very interesting case studies. The first one is set in the time of British India.

The British government was concerned about the number of venomous cobra snakes in Delhi. The government therefore offered a bounty for every dead cobra. Initially this was a successful strategy as large numbers of snakes were killed for the reward. Eventually, however, enterprising people began to breed cobras for the income. When the government became aware of this, the reward program was scrapped, causing the cobra breeders to set the now-worthless snakes free. As a result, the wild cobra population further increased. The apparent solution for the problem made the situation even worse. (Source – Wikipedia)

Now there is no way to validate the authenticity of above story but the second one is very recent and a true incident set again in the city of Delhi. It’s equally amusing.