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Collection

How to Think Better

Ten frameworks that sharpen your reasoning. No jargon, no guru energy - just useful tools.

Most of Moresapien's entries are about the ways thinking goes wrong - the biases, the fallacies, the tactics. This collection goes the other way. These are ten mental models that help thinking go right.

They're not a philosophy course. They're practical frameworks - tools you can use when making decisions, evaluating arguments, or trying to figure out what's true. Some are ancient. Some come from science. All of them become more useful the more you practise using them.

Read them in order. They build on each other, starting with how to break a problem down and ending with how to trust your own judgement.

Start from what you know is true

Most thinking starts from what everyone else thinks, what's been done before, what seems normal. This framework strips all of that away and asks: what do you know to be fundamentally true? And what can you build from there? It's harder than it sounds, because most of what we treat as fact is inherited assumption. But when you need a genuinely original answer, this is how you get one.

Concept Mental Model First Principles Thinking Breaking a problem down to its most basic truths and building up from there, rather than reasoning by analogy. Read →

Work backwards from failure

Instead of asking "how do I succeed?", ask "how would this fail?" It sounds pessimistic, but it's one of the most productive thinking tools available. Problems that are invisible when you're looking at the goal become obvious when you're looking at the obstacles. It's easier to avoid a bad outcome than to engineer a perfect one.

Concept Mental Model Inversion Instead of asking how to succeed, ask what would guarantee failure - then avoid those things. Read →

Ask what happens after what happens next

Every decision has consequences. Those consequences have consequences too. Most people stop at the first layer - the immediate effect - and miss the second, third, and fourth-order effects that often matter more. Thinking one step further than everyone else isn't a superpower. It's a discipline, and it's available to anyone willing to pause before acting.

Concept Mental Model Second-Order Thinking Thinking beyond the immediate consequences of a decision to consider what happens next - and what happens after that. Read →

Think in probabilities, not certainties

The world isn't binary. Things aren't either going to happen or not. They have likelihoods, and those likelihoods can be estimated, updated, and used to make better decisions. This doesn't mean becoming a statistician. It means replacing "I think X will happen" with "I think there's roughly a 70% chance of X" - and then being willing to revise that number when new evidence arrives.

Concept Mental Model Probabilistic Thinking Thinking in terms of likelihoods and ranges of outcomes rather than certainties, so you make better decisions under uncertainty. Read →

Choose the simplest explanation that fits the facts

When two explanations account for the same evidence, prefer the simpler one. Not because simplicity is always right, but because unnecessary complexity introduces unnecessary ways to be wrong. This isn't about dumbing things down. It's about not adding assumptions you don't need.

Concept Mental Model Occam's Razor When you have competing explanations for the same thing, the simplest one - the one with the fewest assumptions - is usually right. Read →
How the crowd pulls you in

Don't assume the worst about people

Before concluding that someone acted out of malice, consider whether the same behaviour could be explained by ignorance, carelessness, or misunderstanding. It's not that bad intentions don't exist - they do. But most of the time, the simpler explanation is that someone didn't think, not that they thought and chose cruelty.

Concept Mental Model Hanlon's Razor Never attribute to malice that which is adequately explained by ignorance, carelessness, or incompetence. Read →

Know where you're competent and where you're not

Everyone has areas where they know what they're doing and areas where they're guessing. The skill isn't expanding the circle - it's knowing where the boundary is. The most dangerous mistakes happen when people operate confidently outside their area of knowledge, because they don't know enough to know what they're missing.

Concept Mental Model Circle of Competence Knowing the boundaries of what you genuinely understand - and having the discipline to stay inside them when it matters. Read →

Remember that models are simplifications

Every framework, theory, map, or model is a simplified version of reality. Useful, but not real. The moment you confuse the model with the territory - when you mistake the organisational chart for how decisions get made, or the economic model for how people behave - you've stopped thinking and started following a diagram.

Concept Mental Model Map is Not the Territory Every model, theory, or description of reality is a simplification - useful, but never the whole picture. Read →
The deliberate tactics

Count what you're giving up

Every choice means not choosing something else. Every hour spent on one project is an hour not spent on another. Most people evaluate options by what they'll gain, but the sharper question is what they'll lose. Opportunity cost is the invisible price tag on every decision, and ignoring it doesn't make it go away.

Concept Mental Model Opportunity Cost Every choice has a hidden price tag: the value of the next-best thing you gave up by choosing this one. Read →

Form your own view before hearing everyone else's

Once you've heard the consensus, it's almost impossible to think independently about the same question. The anchoring is too strong. If you want an honest assessment - of a plan, a person, a piece of work - do your thinking before you ask anyone else what they think. After that, you're not evaluating. You're calibrating to the room.

Concept Mental Model Independent Evaluation Forming your own judgement about an idea or claim before looking at what everyone else thinks. Read →