Notice how the light reflected off of the mirror actually creates a new shadow of the vase on the side wall - the shadow within the bounced light is created entirely from blocking bounced caustic photons, independent of any raytraced or depth mapped shadow from the light.
(the light; reflected; off of the mirror) (Notice how the light reflected off of the mirror; actually creates; a new shadow of the vase on the side wall) (raytraced or depth; mapped; shadow)
the light Notice how the light reflected off of the mirror raytraced or depth
reflected actually creates mapped
off of the mirror
a new shadow of the vase on the side wall
shadow