I was writing a note about a topic of interest. I made a quick and excited draft on my iPad. When I moved on to my PC to write the final note, a whole week flew by and I found myself lost in long paragraphs, over ambitious goals and no clear point to make. I had no idea what I wanted to say.
This happens constantly including right now.
So here's the point: writing is essential to clarify ideas. But be careful of rhetorics. Words and sentences can draw you where you didn't want to go and trap you there.