Your personal particular attitude toward something (i.e., a point of view) could be unique to you or it could be shared by many others.  This perspective defines how you interpret information about the object of your attention. 

When the perspective is largely the same among a group, the attitude becomes a truth – i.e., lots of people see it that way so it must be correct. 

Of course, this is not necessarily the case and perceptions can be both illusory and bias based.

It’s an Illusion

For example, an optical illusion can be interpreted by most in the same way but by its very definition, it is not real.  In this case, the majority perspective would not match reality.  

It does raise the question though, if the majority perceive a thing to be so, does it become fact?  Facts are provable and examination of the illusion would prove it not to be true, therefore the majority perspective might be indicative but it should not be accepted as fact.

The world is flat

A classic example of this is a common belief that the world was flat and if you traveled to the horizon you would fall off.  At a time this was believed to be true by the majority (and still a few even today – e.g., the flat earth society) but it was not true. 

Understanding perspective is important to both interpret what others are communicating to you as well as avoiding the trap of believing in a false truth.