The big question, the PhD question

I've spent the last couple of days pondering and puzzling over my PhD question. My registration document is due in soon and I need to decide on a question that will keep me entertained for the remainder of my PhD studies, as well as being of PhD quality.

I have been thinking about a question for a while and had written down some ideas. I had a meeting with my second supervisor on Monday, which was very beneficial and got me thinking about the question from a different perspective.

So, going from having very few ideas, I've currently got a list of approximately 30 questions. I've narrowed this down and have sent some to my first supervisor, for us to discuss at our meeting tomorrow.

The search for the question continues.