Random Idea Reality can be a difficult topic to get your head round. This is one of the fundamental problems that philosophers have tried to solve since philosophers first philosophised. Of course, doubts arising from an inexact understanding of the true nature of reality do not concern all living creatures. The concept of reality can, and should, be split up into three critical sub-divisions, which can help us analyse the whole thing more effectively. This is also the reality that is generally accepted by entities that have not come to terms with their own possible non-existence.
Consensus reality is just what it sounds like.
If you are accused of insanity, your best bet is to try to demonstrate an understanding of your accusers version of consensus reality and act within their limitations of acceptable behaviour. Discussions of advanced technologies and threats to Galactic security are best not entered into, in most backward civilisations, under these circumstances. Consensus reality can change so fast you really have a tough time keeping up with it. The spherical world paradigm. The Newtonian physics paradigm.