  Matters falling into and consisting of a blackhole can oscillate periodically
across instead of accumulate statically on the central point and form
singularities there. In quantum language, this oscillation not only resolves
central singularities of the blackhole but also blurs its horizon remarkably.
This blurring makes the horizon not a zero-thickness geometric surface any
more, but an extended physic region whose thickness is comparable with the
horizon radius itself. It is our negligence of this fact that leads to the
information missing puzzle, and other related question in blackhole physics.
Besides the title question and Schwarzschild singularity's resolving, the
current work also provides interpretations for the origin of Bekenstein-Hawking
entropy and an explicitly unitary formulation of Hawking radiations.
