The insight that writing helps to reflect on and structure thoughts is as old as it is trivially obvious.
> If people cannot write well, they cannot think well, and if they cannot think well, others will do their thinking for them.
- George Orwell
> If people cannot write well, they cannot think well, and if they cannot think well, others will do their thinking for them.
- George Orwell
I still think there is some truth in it, just but it could be expressed less crudely and less arrogantly. For me trying to think honestly is way more important than how "sophisticated" it is.