Can you choose the next thought?
I feel like I can choose my next thought. If right now as I write this I say, I choose to think of blue, I think of blue. Or I choose, now, to think of a zebra, I think of a zebra.
If I tell you "don't think about blue" a thought about blue appears...can you avoid this?
Its hard not th think of blue if you suggest it to me, that I see.
Can you see how the whole mechanism was an automatic chain of stimulus-response?
Yes, 99% of my thoughts are either reactions to other thoughts, or just pop into my head out of nowhere. In SOME cases I experience myself "taking" thought about something, like I said above.