A common saying goes that people can’t make money beyond the limits of their understanding. For someone in their early twenties, that naturally leads to a practical question: how do you actually expand your cognition and gain real experience?
There isn’t just one path, but several useful answers emerge if you strip the question down to fundamentals.
One approach starts with tracing things back to their underlying logic. A lot of situations look different on the surface, yet run on the same mechanisms underneath. If you keep practicing that kind of thinking, your understanding of people and events gradually becomes more thorough.
The easiest place to begin is with yourself, even though that is often the hardest subject to understand. Reflection sounds simple, but done honestly it can feel like dissecting yourself while fully awake.
Take a very ordinary example: arguing with someone in a game. At first, maybe their trash talk does nothing. Then suddenly one specific line makes you furious, and you snap back. If you stop afterward and ask why that sentence hit so hard, the answer usually isn’t random. Maybe it involved your family, and you care deeply about them. Maybe it mocked something in your real life and landed too close to the truth. The anger reveals a pressure point.
That kind of reflection exposes another uncomfortable fact: what you say and what you actually think are not always the same. For example, a group goes out and doesn’t invite someone. When that person finds out, excuses appear: maybe there would have been some inconvenience, maybe the timing wasn’t right. But the deeper reason might simply be that you didn’t really want them there. On the surface the relationship may look fine, yet your actions keep a quiet distance.
After enough self-analysis, the same habit can be turned outward. You start asking why other people do things that seem strange at first glance.
For instance, some people are happy to treat their male friends to dinner, but become hesitant in similar situations with women. That difference may not be about money at all. It may reflect a deeper reluctance toward romance, or a subconscious refusal to let a relationship cross a certain line. Someone might have had close female friends throughout school and college, always able to talk freely with them, yet never actually entered a relationship. Later, they realize it wasn’t because no opportunities existed. It was because they were intentionally maintaining distance. They knew how to push things further, and even recognized moments when the other person was signaling openness, but they deliberately let those chances pass.
Once you begin noticing that, language itself becomes more revealing. People’s words are both honest and dishonest.
They are dishonest in the obvious way: people give reasons that sound acceptable while hiding the real motive. But words are also honest over time. If you pay attention to what someone says repeatedly, how consistent they are, and how their words line up with their behavior, you can make fairly accurate judgments about how they see you and what kind of person they are. Add in body language and small behavioral details, and your read on someone often becomes surprisingly reliable.
Many errors in judgment do not come from lacking perception in the first moment. They come from emotions overriding it. Quite often, the first instinct was correct, but later people talk themselves out of it. Looking back, they realize their intuition had seen the situation clearly before their feelings interfered.
From there, the same style of analysis can be applied to the wider world.
History is a good training ground because it makes motives, choices, and consequences easier to examine. The people are gone, but human nature is still familiar. Ancient people and modern people are not fundamentally different; the environment changes, but many impulses do not. Looking at a historical figure’s life and asking why they made certain decisions reveals contradictions in simplistic thinking. It also helps clarify what people mean by the “wheel of history” and by necessity.
Take Stalin as one example. There were periods when his instincts proved correct while others dismissed his warnings and failed. Later, once he held power, he also implemented ideas he personally did not agree with, and those choices failed as well. After enough experiences like that, he became increasingly rigid and unilateral. Cases like this show up repeatedly in history: many judgments are not wholly wrong, but only half right. By the time you dig to the bottom, a great deal of politics and economics turns into questions about human nature—how people respond to fear, desire, power, trust, and conflict.
Viewed this way, improving your cognition is not just collecting random stories or “social experience.” It is learning to see the hidden structure under events.
That same logic can be used in work. If you want to enter a certain role, it helps to first understand the underlying logic of that position: what problems it really solves, what incentives shape decisions, what people in that environment care about, and what unspoken rules govern the place. Once inside, dealing with others and making important decisions becomes less about reacting blindly and more about understanding both the logic of the event and the motives of the people involved. If you can satisfy different sides while seeing the full picture more clearly than others, you gain room to operate.
Another answer to the original question is much more direct: your cognition has hard boundaries, and knowledge expands them.
A simple example from school makes this obvious. If matrix operations are outside your mental map, then image algorithms will be difficult to understand. In medical imaging, once an X-ray is imported into a computer, part of the task becomes working with matrix operations and identifying matrix regions that match specific features. If that foundation is missing, then that kind of work—and the money tied to it—remains out of reach.
The same applies layer by layer. Those fields demand a certain mathematical foundation, plus programming knowledge and related tools. Without the basics, the higher-level material is simply unreadable.
And if someone doesn’t even understand trigonometric functions, then vectors are already out of reach. Even something like pathfinding can be viewed as a math problem: starting from (X1, Y1), you choose a route toward (X2, Y2) by finding a sequence of coordinates where the difference between adjacent coordinates does not exceed one, the coordinates cannot fall on blocked positions, and the goal is to complete the route using as few coordinates as possible. This is not mystical. It is structured reasoning.
That is why people keep saying mathematics is a foundation of science. It is indispensable for measuring reality and describing reality statistically. One is one, two is two. At that level, reality is less interested in opinion than in whether the model actually works.
This matters because many people talk loosely about science while never having truly encountered the frontier of it. Grand statements about the “end of science” mean very little if someone has not even stepped into the real depth of scientific thinking.
There is also a simpler mental habit that should not be ignored: don’t let your thinking become fixed.
If the mind stops moving, it rusts. This is difficult to define neatly, but easy to observe in real life. Two people can look at the exact same event and notice completely different amounts of information. One sees only what is obvious; the other sees patterns, incentives, contradictions, and implications. At that point they are no longer operating on the same cognitive level.
And then there is the oldest recommendation of all: read more.
Libraries hold a large share of the best things human beings have discovered, refined, and preserved, and they are available to almost everyone. Reading remains one of the most effective ways to upgrade the way you think.
Read poetry and your language becomes more alive. Read history and you become better at seeing gains and losses, causes and consequences. Read philosophy and you become better at examining the world itself. Read science and reason, and you gain tools for understanding how the world actually works.
Even half an hour a day, done consistently, can produce a major change over a year.
So if you want to improve your cognition, don’t think of it as some mysterious talent. Start by examining your own reactions. Learn to identify the underlying logic of your choices. Extend that habit to other people, then to history, then to society, then to the technical knowledge that sets the limits of what you can understand and therefore what you can do. Keep your mind flexible, and keep reading.
That is how experience stops being scattered fragments and starts becoming genuine understanding.