In life what you see in the periphery is often more important than what you observe in the central vision.
If your attention is stuck, then you do not have the flexibility to move your mind around, and capture what is transient and disappearing ever and ever.
Catch it if you can. The essential and important things often play hide and seek with your mind. There, in the corner of your visual field, the next big thing is secretly throbbing with excitement, for you to discover and make a contact of the soul.