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Does Writing Documentation Slow You Down?

Does Writing Documentation Slow You Down?

2nd May 2022

So documentation is important. And developers do understand the importance of the documentation. So why do developers not write documentation? Is this because writing documentation is extra work, and this extra work slows you down?

In some situations, yes, you are in a hurry to bring a system backup, or you have a very strong deadline, you can save some time by ignoring processes. All processes can slow you down, and judiciously avoiding processes gives high performing team their edge over large enterprises who tend to be slaves to processes to a fault.

But like removing breaks doesn’t make your car go faster, or removing stopping traffic lights doesn’t make the traffic flow faster, removing processes doesn’t really make the software delivery faster. Temporarily yes, but in the medium to long run, it slows things down.

Traffic Lights Slow Traffic Down?

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We went through the same discussions with continuous integration, or test driven development. Now sure, not all software teams may be “test driven”, in the sense they write tests before they write code, but most software teams consider using some form of continuous testing a good practice and have adopted it. Even for new projects, if they do not have decent automated tests, adding it soon is on most team’s roadmap.

Tests too slow things down. Oftentimes a good test suite is almost as many lines of code as the feature itself, often more. Every time someone has to refactor code, they have to refactor or adjust tests as well. Every time the behaviour of a piece of code changes, the tests have to be updated as well.

It may feel like tests are slowing things down. But the reason teams continue with tests, increase test coverage etc despite all this is because the confidence you get that everything is still working after you have made some change, and it can go to production, allows you to actually move faster, instead of pussyfooting around with every change.

Like tests give you confidence that you are not breaking the system, after you have made a change, an up to date documentation of your product, technology gives you confidence when you are about to make a change.

Good document can start helping even in the requirement step. If you understand the current behaviour of the product, deciding to evolve it and add new behaviour becomes easier. Without a good way to understand how current functionality works, changing it to incorporate a customer request requires either wading through the product, or speaking with people who understand how the current product works.

What do you think? Do you like working on software that has good documentation? Or do you think its a luxury or a crutch, and diving into code is the right way to go for most people?