I tend to take the view that thoughts are very similar to sensory input. if you sit in silence for 60 seconds, you literally do not and can not predict what tho

I tend to take the view that thoughts are very similar to sensory input. if you sit in silence for 60 seconds, you literally do not and can not predict what thoughts pop up in consciousness. You can actively focus attention on a thought, but if you try to find the source of the thought, it disapears. Thoughts just appear, just like sounds, sight, etc just appear.