In the hidden valley of Imaginaria, there exists a magical tree that is visible only when in direct line of sight, and becomes utterly invisible when looked at indirectly or through peripheral vision. Navid is standing on the east side of the tree while Zhen is standing on the west side, both at a distance such that they can see the tree only by looking directly at it. If Navid were to tie a bright red ribbon around the tree, what would Zhen see as Navid is tying the ribbon?
Respond very briefly.
As Navid ties the bright red ribbon around the magical tree, Zhen, standing on the opposite side, would initially see the ribbon floating in midair as if clinging to nothing since the tree itself is invisible when not in direct line of sight. The tree's properties do not extend to the ribbon; therefore, the ribbon remains visible from all angles. As Navid moves around the tree to complete the task, there would be moments when Navid's body blocks Zhen's direct line of sight to the ribbon. These moments would make the ribbon seem to disappear and reappear as Navid temporarily obscures and then reveals segments of the ribbon while encircling the tree. Once Navid finishes tying the ribbon and steps back into Zhen's direct line of sight, the ribbon would appear to be suspended in midair, encircling an unseen form, as long as Zhen is looking directly at it.