pechorin's journal

Reading Pechorin's journal gives me more of a sense of who he is, I gathered that he is highly inquisitive which gets him into trouble. It's almost a kind of arrogance. When he meets the girl down at the shoreline, it seems almost obvious to me it's some sort of trap, but not to Pechorin -- she is shown to be so mysterious and capricious, how could Pechorin possibly be sure of her motives? Pechorin seems to be foolish to the point of threatening his own life.