Software Development isn’t Math — it’s Communication

Many software developers start their career by obtaining a degree in computer science or engineering. These degrees typically start with a very strong mathematical foundation but focus much less on written communication. This is a mistake!

Now, before I get a bunch of nasty comments telling me math is the most important thing in the world — let me explain. Software development obviously involves a significant amount of abstract analysis and requires the ability to understand mathematical and engineering concepts. Without these skills, we end up with brittle software that performs poorly..

But, my experience  has taught me these skills are only useful if a developer also has the ability to communicate their ideas effectively.

The most important skill for a software developer is the ability to communicate abstract concepts in concise, logical and structured ways

In case you missed it, the last half of the above statement is also a good definition of higher-order programming languages. We could still be writing code in 0’s and 1’s. But, we’re not — because it’s much more difficult to understand binary than higher-order languages. In fact, we even call them — wait for it — ‘languages’.

If a developer’s only intent was to communicate instructions to the computer / operating system — binary or machine code would be sufficient.

Whether they realize it or not, all developers are writing code for three audiences:

The Computer, the Developer and the Maintainer

I know, it sounds like a C.S. Lewis book. But, just like a good writer knows his audience, all developers should consider their audience as they design and write code.

For any given software program, there is an infinite number of ways to design a solution. How you make use of things like composition, polymorphism and other design patterns indicates to other developers and maintainers how you intend the system to be used, modified and extended.

Take a break, look at your code through someone else’s eyes

For any real, meaningful project, your code will never run in a vacuum. Someone is going to modify it. Someone is going to integrate with it. It’s not enough just to make it possible–you need to make it as easy as possible. Specifically, you need to make it easy to extend the right way — and hard to modify the wrong way.

What do you think? Have you known someone who came up with viable solutions that no-one could understand? Are communication skills vital for software developers?