The chapter I started yesterday has suddenly gone through this. Now I have three fragments going, all may be important, or maybe not. My mind likes a challenge.

I have seen things like that happen for my posts on Facebook, for one.

Sometimes, true for me, if I have strong link to my character's stories. I just watch what they are doing. Other times I get an idea. "Yes, that will work." I wake up in the morning, and either can't remember the idea, or I do remember and know then, that is garbage.

Same. All day, and nights I can't get to sleep.