Oliver and Hanna's attention is focused on the same object - the sound that came from the living room, but they think differently when thinking about this sound. Thus, we got to the main point: our thoughts are not something unambiguous. Oliver and Hanna interpret the sound differently, and therefore they form different mental images of the situation. Oliver's mental image tells him of danger, while Anna's mental image carries no threat. And, as we have just seen, this has its consequences for each of them: Anna peacefully falls asleep, and the frightened Oliver, having lost sleep, continues to clutch the mobile phone in his hand.