There’s this meme in the programming community of thinking of our code as art. This is not a new phenomenon – it dates back at least to The Art of Computer Programming in 1968. More recently we have Paul Graham to thank for drawing the comparison between Hackers and Painters. With the rise of languages like Ruby and Processing and personalities like _why the lucky stiff programming has been gaining a reputation as an art form and a source of creative joy. And it should be. I love programming, it makes me feel good and I feel much better on days I’ve written code and produced something than on days I haven’t. However, I think the “code is art” or “programmers are artists” meme can be misleading because the code is not the point.
Miyamoto Musashi was a medieval Japanese swordsman and Ronin, widely regarded as the best swordsman of all time. He was also the author of a book titled “The Book of Five Rings” – a book on swordsmanship, strategy, tactics and philosophy that is still relevant today. There is one passage in the book that is relevant to our discussion:
The primary thing when you take a sword in your hands is your intention to cut the enemy, whatever the means. Whenever you parry, hit, spring, strike or touch the enemy’s cutting sword, you must cut the enemy in the same movement. It is essential to attain this. If you think only of hitting, springing, striking or touching the enemy, you will not be able actually to cut him.
The primary thing when you take an editor in your hands is your intention to solve the problem, whatever the means. Whether you write a script, a unit test, a function, or a library, you must move towards the solution in the same movement. It is essential to attain this. If you think only of scripts, tests, functions or libraries, you will not be able to actually solve the problem.
Because the code and it’s surrounding artifacts, including your sense of beauty, is not the point. It does not matter how much code you’ve written, what your test coverage is, how much you’ve learned in the process, if you haven’t not solved the problem (or solved it inadequately, or solved the wrong problem). Anything that does not bring you closer to your solution is suspect.
Does this mean that clean code, good comments, test coverage are not necessary or important? Of course not. If your code is not well-written and clear, are you sure you’ve solved the problem? If you have no tests, are you sure you’ve solved all aspects of the problem? If you have no documentation, how will others use and improve on your solution?
Does this mean that your code is not art? Does this you mean you should not carry an artists’ sense of elegance and aesthetics? Of course not. By all means take pride in your work. Make it a point of honor that others can understand your code without sending a dozen emails. Please aim for the solution that is not just correct, but also elegant, concise and efficient.
But keep in mind that the code is not the point. Beauty, elegance and pride are no substitutes for correctness. We are scientists and engineers first, artists second. If the theory does not fit the facts, if the code does not solve the problem, it must be discarded no matter how beautiful it is.
I don’t think of myself as an artist any more. My code is not art. I take pride in my work but it is the pride of an engineer. I want my code to have more in common with a Rolls Royce engine than it does with Sunflowers. I try to do the cleanest, most elegant job I can. But whenever I write code, the intention is to cut the enemy, whatever the means.