Atheistic Dogma- Scientific Fundamentalism

[Mudhammam]

This seems to imply that if a group of people are perceiving the same thing, it is assumed to be objective reality. If it was a hallucination that the group was sharing, or all the members were part of the same interactive simulation of reality and observing the same things, does the fact that they corroborate imply they are experiencing objective reality?

It would reasonable to assume that to a point, in proportion to the nature of the object they claim to have perceived, that there was something objective in reality that was stimulating the group's experiences. However, if further research led to the probability that what they believed they witnessed was an optical illusion, or as in mass hysteria (think church service), involved a great deal of emotion such as fear or guilt so that one may have manipulated and directed the group towards an experience, then doubt would be justified as to the objectivity of the thing in the experience that is alleged to be the external stimuli.