i was just watching "very bad things" on comedy central this afternoon, and i think christian slater put it very eloquently just after they had killed the whore and everyone was totally freaked out about how to handle the situation and dump the body. he basically said that after you forget all of the typical fears and conventional constructs that have been drilled into us since 1st grade, there is an extremely straight line from point A to point B to accomplish the task at hand, and "Dammit, I can SEE that line, and it exists!"
it also reminds me of something drawing classes teach. to draw the straightest line possible, dont focus on the pencil point, focus on the point the line connects to.