Civil inattention is a way of being polite and respectful in public spaces. It means that you should act like you don't notice other people around you, and you should try not to make them uncomfortable by staring or by getting too close to them. To do this, you can walk around with your head up and eyes looking forward, or you can look away if someone catches your gaze. You can also try to avoid walking too close to people when you can. This way, you can show respect and let others feel like they have the space to do what they need to do.