11 Benefits of Critical Thinking for Memory, Learning & Life

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The main benefits of critical thinking include better decisions, stronger problem-solving, deeper learning, improved memory, clearer communication and greater independence.

But there’s another benefit that doesn’t get nearly enough attention:

Critical thinking can help you remember more of what you learn.

Why?

Because memory improves when information becomes meaningful.

Asking better questions helps you notice relationships, assumptions, patterns and contradictions. Those connections give you more ways to think about information and potentially more ways to find it again later.

I’ve spent decades studying memory techniques and taught a fourth-year Critical Thinking course for several years as a professor.

More recently, I’ve applied critical thinking and memory techniques while studying law, where I earned High Distinctions in all of my first-trimester courses.

Along the way, I’ve become increasingly convinced that thinking and remembering should not be treated as separate skills.

In fact, I’ve recently been experimenting privately with a Guided Questioning GPT based partly on centuries-old ideas from the memory tradition.

We’ll get into that unusual connection below.

First, let’s make sure you get exactly what you came for.

Why Is Critical Thinking Important for Memory and Learning?

Critical thinking matters because it helps you decide what information means, whether you should trust it and how it connects with what you already know.

Those activities matter for memory too.

After all, you can memorize facts without understanding them.

You can also understand something perfectly while reading it and discover three days later that almost none of it is available for recall.

That’s why I don’t think memory improvement should focus only on mnemonic imagery.

Before you memorize information, you often need to think about it.

And when you think critically, you’re more likely to ask questions such as:

• What is the main claim?
• What evidence supports it?
• What assumptions does the argument depend on?
• How does this idea connect with something I already know?
• What would make the claim false?
• What other perspectives could explain the same information?

Researchers have also found an important relationship between working memory and critical thinking.

For example, a longitudinal study of adolescents found that working memory predicted later critical-thinking ability.

That makes sense.

You often need to hold one idea in mind while retrieving another, comparing evidence or considering alternatives.

However, the relationship between memory and critical thinking goes much deeper than working memory alone.

Historically, memory training was connected with reasoning, rhetoric and judgment.

The Rhetorica ad Herennium, for example, connects memory with the larger art of communicating and thinking effectively.

This tradition matters because critical thinking isn’t just about doubting things.

It’s about having useful information available, asking productive questions and developing enough mental flexibility to examine what you know from different angles.

If you want some activities to use as you read this page, keep these critical thinking exercises handy.

Now let’s look at the benefits.

11 Benefits of Critical Thinking for Memory, Learning and Life

The following benefits of critical thinking overlap.

That’s a feature, not a problem.

Thinking, learning, remembering and making decisions interact constantly.

As you go through the list, notice which benefits matter most to you.

That simple act of comparing and ranking them is already a form of critical thinking.

1. Critical Thinking Helps You Make Better Decisions

One of the biggest benefits of critical thinking is straightforward:

You become less likely to accept the default option without examining it.

I recently experienced this in a very personal way.

I’d thought about attending law school since around 2000.

At one point, a Crown lawyer even suggested I consider it after reading a victim impact statement I’d written following an incident in which someone broke my nose.

Yet, more than two decades passed.

I kept leaving the same door closed.

Eventually, I thought about the decision using a loose analogy with the Monty Hall problem.

I imagined three doors.

Behind the first was something I already knew:

If I didn’t enrol, I would continue having no firsthand experience of law school.

The second door involved trying one trimester.

I didn’t know exactly what would happen, but I knew that opening it would give me information I could never obtain by standing outside the field.

A third door represented possibilities I couldn’t evaluate yet.

Perhaps I would continue through the degree.

Maybe I’d eventually practise law.

Or perhaps legal study would simply enrich my work as a mnemonist, particularly my research into Peter of Ravenna, the fifteenth-century jurist and memory expert who wrote The Phoenix.

So I opened one of the unknown doors.

That decision led me into law school as a memory experiment, where I earned High Distinctions in all my first-trimester courses.

I still don’t know where the experiment will ultimately lead.

That’s precisely the point.

Critical thinking doesn’t always give you certainty.

Sometimes it helps you make a decision that gives you better information.

2. You Become Better at Solving Problems From Multiple Perspectives

Want to get better at solving difficult problems?

Practice what I like to think of as perspective rotation.

I’ve used this approach since university.

Instead of examining a problem through one lens, mentally rotate through several.

For example, you might consider:

• Historical perspectives
• Psychological perspectives
• Economic perspectives
• Political perspectives
• Ethical perspectives
• Biological perspectives
• Legal perspectives
• Rhetorical perspectives

Not every perspective will apply.

Nevertheless, deliberately trying several can expose assumptions you would otherwise miss.

This is one reason I recommend learning how to think logically without assuming that logic is the only useful mode of thought.

You want a repertoire.

Over time, this habit gives you more options when facing difficult decisions.

It’s also one reason I’ve collected a variety of critical thinking strategies instead of relying on one framework.

3. Critical Thinking Produces Deeper Learning

Reading isn’t the same thing as learning.

Neither is highlighting.

Even understanding a sentence while you’re looking at it doesn’t guarantee you’ll be able to explain the idea later.

Critical thinking changes the nature of your encounter with information.

Instead of merely asking:

“What does this passage say?”

Ask questions like these instead:

• How does the argument work?
• Which elements make it believable?
• How many assumptions are on the table?
• Am I reminded of anything?
• What contradiction arise?

These questions force you to work with the material.

That doesn’t mean every question automatically strengthens memory.

Research into techniques such as elaborative interrogation has produced mixed results. In one study comparing elaborative interrogation with self-explanation, self-explanation produced stronger results.

Good.

Critical thinking should stop us from turning “ask questions” into another oversimplified learning hack.

The real benefit comes from learning how to interrogate material intelligently.

4. Critical Thinking Can Support Better Memory

Here’s where my work as a memory teacher becomes especially relevant.

Most people think memory techniques begin when you create an association.

Sometimes they do.

But often, there’s an important stage before mnemonic encoding:

Figuring out what actually matters.

Critical thinking helps with that.

When you’re reading a difficult chapter, for example, you don’t necessarily want to memorize every sentence.

First, identify:

• The central claims
• Important terminology
• Key relationships
• Major assumptions
• Useful examples
• Information you’re likely to need later

Only then do you need to decide what deserves deliberate memorization.

That’s when a Memory Palace and mnemonic associations can become much more useful.

In other words:

Critical thinking helps you decide what to remember.

Memory techniques help you encode it.

Recall rehearsal helps make the information increasingly available.

There is no single ideal sequence for every learner or every topic.

The important thing is to have a deliberate process in the first place.

5. You Become Better at Recognizing Patterns and Connections

Pattern recognition is one of the most valuable benefits of critical thinking.

Why?

Because isolated facts aren’t nearly as useful as connected knowledge.

This is one reason I’ve spent so much time reading thinkers from the history of memory.

My understanding has been influenced particularly by St. Augustine’s philosophy of memory and the mnemonic teachings of Thomas Aquinas.

One way I’ve come to think about the process is this:

• Data has to be placed “in formation” before it becomes useful information.
• Once you analyze that information, it can develop into knowledge.

When useful knowledge is retained, tested and applied over time, it has the potential to contribute to wisdom.

I’m not presenting that sequence as a scientific law.

It’s a model I’ve developed from years of studying memory, philosophy and the history of ideas.

The important point is that critical thinking helps you form relationships between otherwise disconnected pieces of data.

Those relationships can also make material easier to remember.

Once you’ve noticed the pattern, you aren’t dealing with ten unrelated facts anymore.

You’re dealing with a structure.

6. Critical Thinking Helps You Notice Assumptions and Biases

All of us bring assumptions to what we read, hear and remember.

Memory itself isn’t neutral.

We reconstruct experiences, forget details and sometimes remember events in ways that serve our existing beliefs.

That’s why learning about memory bias belongs in a serious discussion of critical thinking.

The goal isn’t to imagine that you can somehow eliminate every bias.

Good luck with that.

Instead, develop the habit of spotting situations where bias may be influencing your conclusions.

Ask:

• What am I assuming?
• What evidence would change my mind?
• Am I remembering this accurately?
• What information might I be leaving out?
• Why does this interpretation appeal to me?

That last question can be uncomfortable.

Excellent.

Critical thinking isn’t supposed to protect every conclusion you already hold.

7. Your Communication and Listening Improve

Thinking well requires listening well.

That’s harder than it sounds.

During conversations, it’s easy to start composing your answer while the other person is still speaking.

I caught myself doing this years ago and developed a simple practice:

I repeat what the other person is saying silently in my mind.

That small habit helps keep my attention on their words.

As a result, I have more accurate information to think about after they’ve finished speaking.

It also helps with remembering conversations.

Language matters here too.

When you develop your vocabulary and become more sensitive to how arguments work, you gain more precise ways to express distinctions.

This connection between language, persuasion, memory and judgment is ancient.

The goal isn’t to become verbally clever.

It’s to understand what people are actually saying and respond as accurately as possible.

8. Critical Thinking Promotes Intellectual Independence

Intellectual independence doesn’t mean ignoring experts.

Quite the opposite.

I spend enormous amounts of time reading experts, listening to interviews and studying what accomplished people say about their methods.

However, I don’t want any one authority to do all my thinking for me.

That’s why I deliberately collect frameworks.

Some come from academic study.

Others come from people who have achieved interesting results outside universities.

My repertoire includes tools such as:

• IRAC from legal analysis
• Premeditatio malorum from Stoic philosophy
• The WRAP decision-making framework from Chip and Dan Heath
• Warren Buffett’s circle of competence
• Rhetorical analysis influenced by classical texts

None of these frameworks should be accepted uncritically.

That’s the irony.

Even the tools you use for critical thinking need to be thought about critically.

I also deliberately memorize useful thinking frameworks.

Otherwise, what happens when you need one but can’t remember it?

A tool that never comes to mind when the situation calls for it isn’t much of a tool.

That’s also why I maintain a list of the best critical thinking books I’ve found useful.

Practice needs to continue.

9. You Get Better at Making Judgments Under Uncertainty

Sometimes you simply don’t know enough.

Critical thinking helps you recognize that situation instead of pretending certainty.

My usual response is to slow down.

Depending on the issue, I might:

• Review what knowledgeable people have said
• Read books or primary sources
• Listen to interviews
• Ask other people for their views
• Write summaries and reflections in a journal
• Look deliberately for competing interpretations
• Create distance before deciding

That last tactic comes from the “attain distance” component of the WRAP framework.

Distance matters because immediate reactions can feel far more certain than they deserve.

In practice, intellectual honesty sometimes sounds like this:

“I don’t know yet.”

That’s not weakness.

It’s often the beginning of better thinking.

10. You Can Think Faster Because More Useful Knowledge Is Available

Thinking faster doesn’t necessarily mean making your brain somehow run at a higher clock speed.

Often, you just need quicker access to ideas you’ve already learned.

This is where critical thinking and memory training meet again.

Suppose you’ve memorized useful questions, decision-making frameworks, legal principles or rhetorical distinctions.

When those ideas become readily available, you can apply them without spending five minutes trying to remember what they were called.

I’ve written separately about how to think faster by improving access to what you already know.

The distinction matters.

Fast thinking without enough knowledge can create fast mistakes.

Better retrieval gives you a larger and more reliable body of material to think with.

11. Critical Thinking Helps You Think About Your Own Thinking

Finally, critical thinking develops metacognition.

In plain English:

You get better at noticing what your own mind is doing.

That’s tremendously useful.

You can catch yourself:

• Jumping to a conclusion
• Relying on weak evidence
• Forgetting an alternative
• Reacting emotionally
• Confusing familiarity with understanding
• Assuming that remembering something makes it true

This doesn’t mean you’ll catch every mistake.

I certainly don’t.

But systematic practice gives you more opportunities to notice errors before they become decisions.

And when you miss them?

Reflecting on the mistake gives you another opportunity to improve the models you use next time.

How Critical Thinking Became Part of My Memory Practice

Here’s something many people interested in mnemonics don’t seem to realize:

Critical questioning has been part of the memory tradition for a very long time.

Modern discussions often make memory training sound like it’s purely about turning information into strange images.

Mnemonic association is powerful.

But it isn’t the whole story.

Over the centuries, thinkers developed structured ways to generate questions, combine concepts and examine information from multiple perspectives.

This is one reason my own approach has increasingly emphasized questioning before memorization.

You could summarize a useful process like this:

1. Explore the material.
2. Question it from several angles.
3. Identify the details and relationships that matter.
4. Memorize selected material deliberately.
5. Rehearse your recall.

Don’t mistake that list for a universal law.

There is no perfect sequence.

The point is to have a sequence rather than passively consuming information and hoping it sticks.

Memory Wheels Turn Questions Into Thinking Prompts

One of the most fascinating examples comes from the history of memory wheels.

I’ve written a complete tutorial on the Ramon Llull Memory Wheel.

Llull used combinatorial structures that later thinkers developed in increasingly sophisticated directions.

Giordano Bruno is especially interesting to me because he improved on these traditions and used structured questions as prompts for thinking and memory.

That work relates directly to ars combinatoria, the art of combining existing concepts to generate new possibilities.

Instead of staring at information and waiting for insight to magically appear, you give yourself prompts.

• Who?
• What?
• Where?
• When?
• Why?
• How?
• What follows from this?
• What contradicts it?
• What category does it belong to?
• What happens when I combine it with another idea?

The exact questions can change.

Having a structure is what matters.

Guided Questioning: A Recent Experiment

I’ve recently taken this idea in a new direction.

Privately, I’ve been experimenting with something I call GQ GPT.

GQ stands for Guided Questioning.

I created it because I noticed two problems.

First, people often don’t use critical questioning as part of creating stronger memories.

Second, almost no one reads the obscure memory literature where thinkers like Bruno developed earlier systems so they could serve as prompts for useful questions.

GQ GPT is my attempt to explore what happens when that tradition meets modern AI.

For example, I gave it a philosophical passage from Porphyry.

Rather than summarize the text for me, the system generated prompts like these:

• Accuracy: In one sentence, what conclusion are the Stoics and Peripatetics trying to establish here?
• Analysis: Name the 2–3 steps in their reasoning from “humans need animals” to “we cannot owe animals justice.”
• Judgment: Underline the sentence where the argument makes its largest assumption. What must be true for that step to work?
• Sticky summary: Complete: “Their argument depends on the claim that ______.”
• Next action: Answer all three in six lines or fewer.
• Review cue: Re-read only the sentence beginning “Hence…” before answering.
• Notice what’s happening.

The AI isn’t merely asking me whether I remember the passage.

It pushes me to identify:

• The conclusion
• The reasoning structure
• The major assumption
• A compressed summary
• A specific retrieval cue

That creates a very different relationship with the text.

However, I want to be precise.

GQ GPT is a recent private experiment.

Not many people have tested it yet, and I’m not claiming that I’ve scientifically demonstrated that it improves memory.

Nor would I claim that every question automatically improves learning.

A systematic review of research on questioning found broad educational value across areas including critical thinking, comprehension and metacognition, but the details of how questions are used matter.

My interest is more specific.

I want learners to stop thinking that memorization begins and ends with mnemonic association.

Sometimes the deepest encoding begins with interrogation.

How to Remember to Think Critically

There’s a practical problem with everything you’ve read so far.

You can know dozens of critical-thinking techniques…

And still forget to use them.

Distraction causes this.

So does lack of practice.

Sometimes you’ve learned a framework once, understood it perfectly and simply haven’t made it available enough in memory for it to arise when needed.

That’s why I don’t separate learning critical-thinking tools from remembering them.

You can deliberately memorize:

• Questions
• Frameworks
• Categories
• Logical distinctions
• Decision-making models
• Examples of common errors

Then practice applying them.

A Memory Palace can help.

So can repeated questioning, journaling, conversation and using the frameworks on real problems.

The goal isn’t robotic thinking.

Quite the opposite.

By making useful prompts familiar, you free yourself to apply them flexibly.

Ask Questions Relentlessly

Questioning is one of the fastest ways to stop passive learning.

Instead of accepting the first interpretation that enters your mind, develop the habit of asking another question.

Then another.

You don’t need to become obnoxious about it.

Most of the questioning can happen silently.

The point is to interrupt automatic acceptance long enough to examine what you’re taking in.

Stay Curious Without Believing Everything

Curiosity and skepticism don’t have to fight each other.

You can remain open to an idea without accepting it.

Likewise, you can investigate something you initially dislike without promising to agree with it later.

I’ve deliberately worked on this tendency in myself using various mental strength strategies.

That openness has taken me into fields, books and practices I might once have dismissed.

It has also forced me to change my mind more than once.

Good.

I’d rather update my thinking than spend years protecting an obsolete conclusion.

Practice Active Listening

Critical thinking isn’t only something you do with books.

Conversations provide constant practice.

Listen carefully enough to represent the other person’s position accurately.

Then examine it.

When possible, ask questions before you object.

You’ll usually learn more that way.

And you’ll have better information to remember afterward.

Engage in Friendly Debate

Debate is another excellent training ground.

You don’t need formal debate preparation every time you disagree with a friend.

Instead, let go of the need to win.

That’s what I try to do.

Once winning stops being the goal, you can enjoy examining the different angles of an issue.

Your friend challenges an assumption.

You test theirs.

Both of you discover details that weren’t obvious at the beginning.

That’s much more valuable than scoring points.

Critical Thinking and AI: Don’t Outsource Your Questions

AI creates an interesting challenge.

It can generate questions remarkably quickly.

I used AI extensively during my law-school experiment for exactly this reason.

I asked it to:

• Question me from different angles
• Generate hypotheticals
• Challenge assumptions
• Identify gaps in answers
• Create variations on legal problems
• Ask me to explain concepts in my own words

Those capabilities are useful.

But they introduce another problem.

If the machine always generates the questions, are you getting better at questioning?

That’s one reason my conversations with AI expert Andrew Mayne about analog memory and AI have interested me so much.

Even while working at the cutting edge of artificial intelligence, he continues using physical books, journals, playing cards and other forms of deliberate learning.

That reflects a principle I think matters enormously:

Don’t let the interface determine your learning process.

The same principle applies to critical thinking.

Use AI to scaffold your questioning if it helps.

But notice the patterns in the questions.

Learn them.

Remember them.

Eventually, you should become better at generating useful questions yourself.

Otherwise, you’ve outsourced the very skill you intended to improve.

How to Improve Critical Thinking Without Making It Complicated

You don’t need years at university to start enjoying the benefits of critical thinking.

I say that as someone who spent years at universities and later taught critical thinking as a professor.

You can start today.

For a complete tutorial, see my guide on how to improve critical thinking.

For now, keep the process simple:

• Ask better questions.
• Expose yourself to multiple perspectives.
• Read deeply enough to acquire useful knowledge.
• Remember the frameworks that help you analyze what you find.
• Apply them repeatedly to real situations.

Then reflect on what happened so that the process compounds.

How Many Benefits of Critical Thinking Do You Want?

The eleven benefits of critical thinking we’ve covered are only a starting point.

As your thinking improves, the benefits begin interacting.

Better questions improve your learning.

Deeper learning creates more knowledge.

Remembered knowledge gives you more material for comparison and pattern recognition.

Those patterns help you make better decisions.

Better decisions create new experiences.

And those experiences give you more data to think about.

That’s why I keep returning to the progression I’ve developed through my study of Augustine, Aquinas and the wider memory tradition:

Data → Information → Knowledge → Remembered Knowledge → Wisdom

Not every piece of remembered knowledge becomes wisdom, of course.

You have to test it.

Use it.

Question it.

Sometimes you need to discard what you learn or discover, of course.

But the process gives you something more substantial than collecting facts.

It helps you form a mind capable of working with what it knows.

That’s ultimately why memory improvement and critical thinking belong together.

One without the other leaves too much on the table.

If you want to start strengthening the memory side of this equation, my free course will show you how to build and use a Memory Palace:

Then keep practicing all the various types of thinking alongside your memory.

The more knowledge you can remember and intelligently question, the more possibilities you’ll have available when it matters.

And that’s one benefit of critical thinking I don’t expect to stop compounding anytime soon.