Systems-Thinking on Rafiul Alam

How to Think: 10 Mental Models for Sharper Reasoning

Mon, 16 Feb 2026 00:00:00 +0000

Most of education teaches you what to think. Almost none of it teaches you how to think.

Yet the quality of your thinking determines the quality of your decisions, and your decisions determine the trajectory of your life.

Here are 10 mental models that fundamentally change how you approach problems.

1. First Principles Thinking

Strip away assumptions. Reason from fundamental truths.

Most people think by analogy: “This is like that, so I’ll do what others did.” First principles thinking asks: “What do I know to be absolutely true? What can I build from there?”

The Tragedy of the Commons: How Shared Resources Get Destroyed by Self-Interest

Thu, 30 Jan 2025 00:00:00 +0000

In medieval England, villages had common grazing land-the “commons”-where all villagers could graze their sheep.

Each shepherd faced a decision: How many sheep should I graze?

The logic was simple:

Adding one more sheep: I get 100% of the profit
Cost of overgrazing: Shared among all shepherds

So every rational shepherd added more sheep.

And more.

Until the commons was destroyed. Overgrazed. Barren. Worthless to everyone.

This wasn’t malice. Each shepherd was acting rationally in their own self-interest.

Psychology Short Collection: Hidden Systems - Esoteric Methods

Wed, 06 Nov 2024 00:00:00 +0000

Obscure methods and mental models that change how you think about thinking. Each one a tool most people never discover.

The Zettelkasten Method

Note-taking system that builds a “second brain.”

The origin: German sociologist Niklas Luhmann used it to write:

70 books
400+ academic articles
In 40 years

He said his productivity came from his Zettelkasten (slip-box).

How it works:

Fleeting notes: Capture ideas immediately
Literature notes: Summarize what you read (in your own words)
Permanent notes: One idea per note, written clearly
Link notes: Connect related ideas
Index: Entry points to chains of thought

The magic: Your notes become a thinking partner.