Let me try:
Astronomers say that there are 'black holes' out in space, that have such intense gravity that what ever gets sucked into them will NEVER get out - even light - thus the term 'bh'.
They ALSO say that ALL matter in the Universe came from an extremely small source, 15(?) billion years ago (the ULTIMATE bh I would say). The question then becomes: how can BOTH of these assertions be true? Thus 'astronomical evolution', if you will.
The original singularity is hypothetical and not a black hole. Black Holes evaporate. You know that right?