Final answer:
Inattention blindness, also known as selective attention or perceptual blindness, is the phenomenon where you fail to see something because your attention is not focused on it. This can happen when your mind is wandering elsewhere and you are actively attending to something else.
Step-by-step explanation:
Inattention blindness is the phenomenon where you fail to see something that is right in your line of sight because your attention is not focused on it. This happens when your mind wanders elsewhere and you are actively attending to something else. It is also known as selective attention or perceptual blindness. Examples of inattention blindness include not noticing a gorilla walking among basketball players in a video or failing to see a red cross moving across a computer screen while focused on specific objects.