An event occurs and interpretation is made.
This is the bass line of why there's no such thing as truth.
Events and interpretations occur simultaneously.
An event cannot be separated from an interpretation.
The old edict of a "one nation's terrorist is another nation's freedom fighter", is tied to this cognitive processing.
If I witness an apple falling from a tree my interpretation. I would interpret that as the fruit being ripe and ready to fall.
What someone else observing the same event the Apple didn't fall from the tree the Apple was pulled by gravity
On one extreme end or someone under the effects of a mind-altering substance will say there is no tree or Apple.
And all three are correct.
That is the complexity perspective.