In the sensory field you can switch back and forth between the 'ready-to-hand' and the 'present-to-hand', or more accurately, the sense as incorporated with its objects seamlessly in the flow of living and the same sense as isolated, immobilised and signifying only itself, or say between the web of life and the molecular qualia that constitute it. This difference is exploited in music and the plastic arts. When it comes to thinking however this difference is not available, or it is recoded back into the fields of meaning. You can observe the immediate data out of which a sense of self was precipitated but not without an additional act of will carrying a new and inaccessible sense of self. The process can't be immobilised, you can't get around the back of thought. Or if you can it is not available to ordinary consciousness.