I don’t even know where to start. I have to assume that he’s referring to the non-coding aspects, because it feels like a philosophical question more than a technical one. So I thought hard. And I got an answer.
To fully explain the answer, I’m going to go deep in philosophy, so just bear with me for a while. Of all the species on Earth, humans are the only one actively and aggressively changing our surroundings. For the sake of argument, let’s take it that we do that to make things better, for us, for the environment, for every living creature.
Ignoring the Darwinian theory of evolution and the belief that we all sprang forth from the union of a single man and woman, Nature seems content to just let things go at their own pace. Have you seen a cat work hard? Albatrosses glide over miles and miles of open ocean, and they land only because of the need to procreate or to feed their young. Bristlecone pines live for millennia. Can you imagine doing nothing the entire day except grow a fraction of an inch?
Where was I? Right, so not only do we humans do something about our surroundings, we do it at an alarmingly fast rate. Buildings spring up like mushrooms. Cars are built so we travel faster. And then came computers and the need for programmers. The Internet exploded the transfer of information, and software is part of the driving force.
I believe it’s our basic nature to want to better ourselves and in relation, our surroundings. In the software development world, this means writing better programs. Perhaps because of the ubiquitous nature of the Internet, this gave the illusion that anyone can program. Everyone wants to program, because there’s the satisfaction of creation and the element (or illusion) of control. That the program will make our lives easier. It does, just not one created by anybody…
So how do we become great programmers? One way is the UI-first approach. Design your user interface first, because it’s the only thing your users care about. Then work backwards towards the code.
And so my answer to the actual theory behind programming?(yes, finally!) It has always been about humans. Programming languages come and go. Paradigms, methodologies and Internet fads. Software development life cycles, from design to coding to testing to launching. All these variables are nothing compared to the human factor. We are the most unpredictable, and paradoxically the most important part.
The human factor is involved in estimating project deadlines. It’s why I see fresh graduates struggling with the corporate environment. It’s also why I seem to write stuff about human behaviour, such as observing a hungry youth, or the reluctance for authentication. There’s the importance of understanding user queries, placing ourselves in the user’s perspective before we jump to conclusions.
The study of human behaviour greatly benefits your skills as a programmer. Because ultimately, you’re creating programs to be used by humans (The Matrix and robotic artificial intelligence aside). To create great music software, it helps if you’re a musician. To create great blogging software, it helps if you’re a blogger. To create great image editing software, it helps if you’re a graphics artist.
Program errors aren’t about the program itself. It’s about the human between the computer and chair. It’s about the programmer’s misunderstanding of human behaviour.
20 years from now, we might not have to write code at all. We might be shuffling stuff on virtual screens like in Minority Report or The Matrix. But the human part is always there. So use a human-first software development approach.