In the past few months, I have been thinking a lot about the question I should investigate in my PhD-project. It put me thinking about how many good research questions are there? How many of these questions I'm interested in?
Right now I'm following the steps of a great Brazilian rock/ska band to figure it out. Once, a journalist asked the band what was their secret to have so many hits. They said something like "We write down hundreds of songs a month. At the end of the year, we can keep a few good ones."
So, that's exectally what I have been doing in the last few weeks. I writing down every research question I can think of, considering my research interests (no matter how stupid, obvious, naive or ambitous they sound).
After saying all this, this TED talk here may sound a bit self-help. But it's worth seven minutes of your time.
"The simplest questions can carry you out to the edge of human knowledge" (via Flowing Data)
ps. Of course most of the posed questions will be discarded. The next step should be to select the few good ones (if there's any left). But first things first...