Yes, mistakes were made. But the only way they can come to have any value at all is if we learn from them.
Madness string 105729
A black hole creates a hole in your perspective by trapping light that would have otherwise contributed to the image your eyes perceive. But I will note that any object between you and the source of light can cause a similar phenomenon. A solar eclipse is not a hole in the sun. Just because black holes achieve this through a unique means doesn't make them more deserving of being defined as holes, ontologically.