Because things are just are. An analogy I can come with is a graph like irrigation canals. You fill them with water and they just are. Or something like an adder circuits. You "input" the numbers and the result is just there. There isn't an algorithmic process with loops, conditions and recursions. We don't store information, we store its patterns and link it to other patterns. We don't process information as much as we filter it through patterns we've stored. Like logic gates do not process electricity, our brain do not process information.

(This is very much armchair psychology theory)