"Sagittarius A* (pronounced "Sagittarius A-Star", abbreviated Sgr A*) is a bright and very compact astronomical radio source at the Galactic Center of the Milky Way. It is located near the border of the constellations Sagittarius and Scorpius, about 5.6° south of the ecliptic, visually close to the Butterfly Cluster (M6) and Shaula. Sagittarius A* is the location of a supermassive black hole, similar to massive objects at the centers of most, if not all, spiral and elliptical galaxies."

https://en.wikipedia.org/wiki/Sagittarius_A*

We can never ever travel to the center of the galaxy and verify there is a "black hole" there. Does this mean we should stop asking questions about the Sagittarius A star? Should it be a "crime" to ask questions about the Sagittarius A star? Should it be a "crime" to disagree on the nature of the Sagittarius A star?

Earlier I wrote some posts at MO under the username "user122276" but I chose to delete my profile - I disagree with the way the forum was administered:

"When someone else is editing my posts and include links that I do not like, this is to show me disrespect as I have explained earlier. And one of the cardinal rules on this forum is that you should respect other users and their choices. When I request that you respect my choices and do not edit my posts and you violate this, you violate the rules of the forum in my opinion. – user122276"

https://mathoverflow.net/questions/391931/which-representations-of-mathfraksl2-are-homomorphic-images-of-the-tensor/392578#comment1025085_392578

https://mathoverflow.net/questions/385099/when-do-flat-holomorphic-connections-exist