In the world of software engineering and computer networking, there is a fundamental rule that keeps the internet running smoothly: Postel’s Law, also known as the Principle of Robustness. This law is named after Jon Postel, it states that: “Be conservative in what you do, be liberal in what you accept”.
This was originally designed to ensure different computer systems could communicate reliably via protocols like TCP/IP, it offers a profound lesson for our personal lives and, maybe most importantly, for our political leaders, particularly here in Africa and my homeland Ghana.
From Servers to Souls: Understanding the Principle
In technical terms, the Principle of Robustness means that when a system (like a server) sends data, it must strictly follow the rules to ensure the receiver understands it. But, when that same system receives data, it should be flexible. Even if the incoming data is messy, poorly formatted, or even “rude” in its technical requests, the server should handle it gracefully rather than crashing.
Now, this can be translated into a powerful life philosophy: Be extremely careful about what you give to the world, but be incredibly open to what you receive from it.
In simple terms: If someone throws filth at you, you should give them flowers in return. That is the essence of true robustness.
The Role of a Leader: Servers of the People
The source draws a sharp parallel between a server in a network and a politician in a country. Just as a server exists to serve the client, a politician’s primary purpose is to serve the people.
If a politician is truly a “server” of the public, they must embody the Principle of Robustness. They must have a “big heart” (dill) and the capacity to accept criticism, even when it is harsh or insulting. In many parts of the world, leaders face constant public scrutiny and even insults, yet they continue to function because that is the nature of service.
A Crisis of Robustness in African Leadership
This crisis is nowhere visible than in African leadership. Often, people are brought into leadership positions, some who cannot even manage their own families, yet they are expected to lead a nation. Their primary goal then becomes serving themselves rather than the public.
Across many African countries, leaders and their followers often cannot tolerate a single word of criticism, even words that may not be objectively horrific. Instead of receiving feedback as part of the job, they treat criticism as an attack, sometimes met with intimidation, arrests, etc. When a leader or their followers cannot handle the “messy” input of public opinion with grace, they are, in the speaker’s view, failing in their fundamental duty. This is a failure of robustness, and it reflects a deeper crisis in how leadership itself is understood on the continent.
The Other Side: Design by Contract
But robustness should not be a one-way street. In software engineering, there is another concept called Design by Contract. It says that before a system accepts input, the person or system sending that input has a duty too. They must send something clear, and well formed. If the input is careless or broken, the system is not obligated in any way to just absorb it and smile away.
This gives us the missing half of the picture. Yes, a leader should have a big heart and be able to take criticism without crashing. But the person giving the criticism also has a job to do. Criticism should be specific. It should point at a real issue, not just noise thrown at someone for the sake of throwing noise. A server that patiently processes garbage all day is not being virtuous, it is being abused. In the same way, a leader who is expected to sit through vague insults that are not even about anything real is not experiencing tolerance, that’s abuse dressed up as feedback.
So the full principle should read both ways. Be liberal in what you accept, yes, but also be responsible in what you send. Robustness is not just about the leader enduring everything thrown at them. It is also about the critic aiming their words at the actual issue and doing so with grace, not criticism for the sake of criticism.
Conclusion: A Call for Tolerance
True leadership is not about power; it’s mostly the capacity to tolerate and serve. We live in a time where political and personal intolerance is high across Africa, but the Principle of Robustness offers a way forward.
Whether we are software engineers, political leaders, or ordinary citizens, we should strive to bring this principle into our own lives. We must develop the power to endure and the wisdom to respond to negativity with grace. Only then can we move toward a society, that truly serves everyone.
