Write down things that weren't obvious to you to start but are now.

These are the wedge insights that if other people understand they can shortcut the work you had to do to get to the insight and just do it.

Humanity is all about accumulating these shortcuts, these insights, so that we can think further and further than anyone before.

We do this by standing on not the shoulders of giants, but the big emergent scrap heap of useful insights accumulated via a bottom-up process called science.

Even things that are not formally science are still replicated when they're useful, just more informally.

Insights that resonate with people, that are efficient packages for communicating a deep insight, are more likely to be kept around and shared.

As humanity we're constantly sifting through a lot of ideas to find the set that are most clarifying.