Passage Summary: Researchers discovered that brand-new babies already prefer looking at human faces over other types of images.

Reasoning: Infants only a few hours old spend more time looking at drawings of faces than at blank shapes or scrambled facial features.

Analysis: The central mystery here is how a human being with zero life experience can already recognize a complex pattern like a face. Since they haven't had time to learn this behavior, the explanation must involve something innate or biological. We are looking for a piece of information that explains how this 'pre-programmed' recognition works. An answer that suggests the visual system is hard-wired to respond to face-like patterns right from birth would perfectly bridge this gap.