Finishing a paragraph or section gives people a micro-burst of accomplishment and reward. It helps them chunk the basic insight together and remember it for later. You want people to be going – “okay, insight, good, another insight, good, another insight, good” and then eventually you can tie all of the insights together into a high-level insight. Then you can start over, until eventually at the end you tie all of the high-level insights together. It’s nice and structured and easy to work with. If they’re just following a winding stream of thought wherever it’s going, it’ll take a lot more mental work and they’ll get bored and wander off. ​ Deliberate use of parallelism is okay and even commendable. Usually this involves using the same structure to call attention to certain differences. ​ I think this microhumor stuff is really important, maybe the number one thing that separates really enjoyable writers from people who are technically proficient but still a chore to read.