Sometimes I think about this.

We live in an era of space exploration, but how much do we really know about the brain, the most important organ in our body?

To be honest, there is still so much about the brain that remains unknown.

Despite the dazzling advancements in equipment like MRI and EEG, what we know is just the tip of the iceberg.

The brain weighs only about 1.3 to 1.4 kg, yet it contains over 100 billion neurons and an even greater number of synaptic connections. However, we still cannot answer how the brain creates "consciousness," why some memories last a lifetime while others fade quickly.

Of course, science has revealed a lot. We know that the frontal lobe regulates planning, judgment, and emotions, that the hippocampus is related to memory, and that the amygdala is responsible for fear and emotional responses.

But that might be akin to knowing that "the steering wheel changes direction" when looking at a car. Understanding how a car is actually designed, why some cars last long while others break down quickly, is another story. Brain research seems to be at a similar stage. We know some surface-level functions, but we still have a long way to go to understand the fundamental principles.

What's more interesting is that the brain studies itself. Is there any other irony like this in the world? We think with our brains, formulate hypotheses with our brains, design experiments with our brains, and ultimately, the subject of our research is the brain itself. Thus, some philosophers have said, "For the brain to fully understand itself is like the eye being unable to see itself directly."

Nowadays, neuroscience is experiencing a new wave thanks to artificial intelligence. The concept of neural networks is ultimately inspired by the structure of the human brain. However, ironically, just as it can sometimes be difficult to explain the decisions made by the AI we create, the thought processes of the human brain remain shrouded in mystery.

Personally, thinking about the brain always makes me feel humble. It's mysterious that all my words and actions, the joys and sorrows I feel, the love and anger I experience all come from this small device. Yet at the same time, this brain is incredibly fragile, capable of losing its function from a small shock or illness. On one hand, it seems like a powerful product of the universe, and on the other hand, the fact that it is as fragile as glass makes us humans even more special.

In the end, we know a little about the brain, but the truth is that there is still much we do not know. However, perhaps even a lifetime of research may not reveal everything. Nevertheless, the journey of exploring the brain undoubtedly enriches our lives.

Perhaps the effort to understand the brain is not just an expansion of scientific knowledge, but a process of approaching the age-old question of "Who am I, and what does it mean to be human?"

We still know very little about the brain, but thanks to that ignorance, we become more curious, want to learn more, and become more humble.

And in that process, the beauty of being human may be revealed.