I went through a phase of leaving notepads next to my bed to try to write down my dreams and it simply never worked.

I stopped after I wrote something on the pad while I was still asleep. Woke up to text with letters that were backwards, upside down, weird words — so close to real words that I was sure I ought to know what they meant and had really meant to write them down.

Scared me. Literally too weird to keep. I tore up the page.

In a way I think this is one part of the same continuum. There are thoughts that have meaning and can have no words, and words that look like they should have permanent memorable meaning and don't.