Meditation is a good analogy. I haven't found sitting and meditating for 15-30 minutes especially mind-expanding. Listening to music and walking my dogs, however, sometimes takes me somewhere expansive. That is to say, I don't think there's a one-size-fits-all rule here. More like we should experiment with ourselves and our patterns, and that we can use the signs left behind by fellow travelers as a cue to look more closely in certain areas.

With all that said, 1) I don't think it's important to literally write "morning pages" (nor does Ms. Cameron, in my reading). It's important to find the correct medium _for you_ that manifests ideas in the world. 2) I think the signal-response pattern _is important_. It's not enough to put thoughts/feelings/whatever into the world. You need some means for things to return to you.

Flip it around though, as a fellow weirdo -- what stimulates your creativity?