  Symplectic topology has become a thriving area of research in mathematics and
physics since Gromov's discovery in 1985 of a surprising property of canonical
transformations (and hence of hamiltonian flows),"the principle of the
symplectic camel". We exploit this property to show that the usually EBK
quantization is equivalent to the physical assumption that the only allowewed
semiclassical states are those with symplectic area nh+h/2. We introduce the
terminology "quantum blobs" for these states. Quantum blobs are more general
and powerful tools than the usual phase space cells of quantum statistics.
