This is a nice example. It's not that we are not capable of understanding the original code block, but the 'breathing space' and just some minor sparse comment

This is a nice example. It's not that we are not capable of understanding the original code block, but the 'breathing space' and just some minor sparse comments now allow much of that understanding in less than a few seconds -- a real practical side when working on a large body of code. And it does that without interfering with the 'good practices' highlighted in the article.