There is one law in the universe more cruel and absolute than any other. It is the Second Law of Thermodynamics, which was popularized by the movie Tenet as The Law of Increasing Entropy.
Simply put, the universe moves toward disorder when left alone. Hot coffee goes cold, a tidy room becomes messy, and even elegantly written code eventually rots. The human body is no exception. It ages and gets sick before it finally turns back into dust.
Nature’s arrow points clearly toward decay and death. This is the default state of our universe.
We Are Fighting a Losing Battle
As a developer, I fight entropy every single day. Adding a new feature always increases the chance of bugs and disorder. If I leave a server alone, it will eventually crash under the weight of traffic. If I do not actively type "order" into existence with my keyboard, the system inevitably races toward a shutdown.
Life is the same way. When I come home from work, the house is always a mess. I wash the baby, put away the toys, and do the dishes to restore some order. I do this knowing perfectly well that it will be messy again by tomorrow morning. Relationships are no different. We drift apart if we don't put in the constant effort to communicate and care for each other.
Sometimes I feel a sense of futility. I wonder why I clean a room that will just get dirty again, or why I manage a body that will eventually return to the earth. I even wonder why I stay up all night refactoring code that will one day be obsolete. In a way, we are all like Sisyphus, repeating a losing battle against the laws of the universe.
The Miracle of Local Order
However, there is an interesting exception in physics. While the total entropy of the universe always increases, we can temporarily decrease it within a specific space by injecting energy. This is the definition of Life.
What is life? It is the state of resisting the natural disorder of death. By burning energy to maintain high-level order, our hearts pump and our cells regenerate. Life acts as a great rebellion against the laws of nature.
Therefore, living is a struggle in itself. The act of waking up and making the bed, going to work to organize messy code, or soothing a crying child until they smile again are all sublime acts. We are creating Local Order against the collapse of the universe.
The Rational Optimist’s Last Commit
What is Rational Optimism, the theme of these forty chapters? It is not just a vague hope that everything will be fine. Instead, it is based on the cold reason that everything will eventually collapse.
We know that one day, this server will stop. The order I created will return to disorder, and I will also pass away. But even if defeat is the final conclusion, optimism is the attitude of building today’s share of order anyway. It is the will to build the most beautiful and sturdy sandcastle today, even though we know the tide will wash it away.
That is how I define optimism. If pessimism is a product of the Intellect, then optimism is a product of the Will.
Love, The Only Algorithm That Reduces Entropy
What is the only energy source that slows down the universe's collapse? What breathes warmth into a cold world? I have decided to call it Love.
Love is inherently inefficient. It involves burning my own energy to save someone else. But when that energy is injected, a child grows, a relationship is restored, and a warm order is created in a corner of this desolate world.
I decided that we should be Platforms rather than Apps. Giving up our own resources for others is the most powerful code that defies entropy.
Back to the Beginning
My forty-day journey ends here. I am returning to my seat as a developer. There are bugs to be fixed on my monitor and a living room full of toys scattered by my child.
The world is still uncertain and the future is unknown, but I am not afraid. I have the Code to turn chaos into order and the Resilience to rebuild what has fallen. Best of all, I have people by my side who will embrace each other's bugs.
The universe wants disorder, but we will love until the very end. This is my final conclusion.
System.exit(0); Process finished with exit code 0