Write it down. Half the time you’ll find out what you actually think somewhere in the second paragraph.

Writing is thinking made visible, and it is slower than thinking, which is the advantage. Held in your head, an idea stays a general shape you already agree with; on paper it has to become sentences, and sentences expose the missing parts. Most people find their actual position partway through, in the section they did not plan. The page does work the mind will not do alone.

When something is tangled, write it out for one page without stopping. Do not edit as you go. Read it back and underline the sentence that surprised you.