  A promising strategy for better understanding space and time at the Planck
scale, is outlined and further pursued. It is explained in detail, how black
hole unitarity demands the existence of transformations that can remove
firewalls. This must then be combined with a continuity condition on the
horizon, with antipodal identification as an inevitable consequence. The
antipodal identification comes with a CPT inversion. We claim to have arrived
at 'new physics', but rather than string theory, our 'new physics' concerns new
constraints on the topology and the boundary conditions of general coordinate
transformations. The resulting theory is conceptually quite non trivial, and
more analysis is needed. A strong entanglement between Hawking particles at
opposite sides of the black hole is suspected, but questions remain. A few
misconceptions concerning black holes, originating from older investigations,
are discussed.
