Matt Strassler: «The details of the reconstructed image depend on exactly what assumptions are made.» https://profmattstrassler.com/2022/05/12/in-our-galaxys-ce

Matt Strassler: «The details of the reconstructed image depend on exactly what assumptions are made.» https://profmattstrassler.com/2022/05/12/in-our-galaxys-center-a-tiny-monster/ https://profmattstrassler.com/2022/05/12/in-our-galaxys-cent... What does this mean? If they assembled an image to fit their assumptions, that would be circular reasoning. I don't understand.