I faced following sentences:


  Unlike the co-ordinate singularity at $r = 2M$, the origin of the Schwarzschild metric $r = 0$ has a true curvature singularity. It was first believed that this singularity was an artifact of spherical symmetry and that a generic collapse would evade the singularity. However, work by Hawking and Penrose showed that this was not so and that singularities were generic rather than special. The ubiquity of singularities is guaranteed by the singularity theorems by Hawking and Penrose.


Question1: What is the meaning of "generic collapse"?

Question2: When is a singularity an artifact of spherical symmetry?


Question: using the new facebook payments reports API
Answer: to fetch the zip file, file_get_contents also works