Perception, when applied to others,
(e.g., why did they do that? what were they thinking?
This must be there intention / motivation / reasoning)
will usually be flawed... And is always uncertain.
But
Perception, when applied to the self,
(e.g., how am I framing this? where is my awareness?
This moment only exists this way because I choose to view it as such)
is a compass... And a lens for finding certainty.