subconsciously he leaned into the motion , not really intending to slam the lid , not at all bad-tempered , just seeking a little physical leverage , and his change of position hunched his shoulders a little , which brought his head forward a little , which changed his eye line a little , which meant he had to look somewhere , and given the choice of the lit interior of a previously closed space or a featureless length of dark blacktop , well , any human eye would opt for the former over the latter .