When you stop blinking, you’re in some sort of dream state, a kind of tunnel where you can’t actually see what’s going on, and that’s exactly what happens to the characters. It’s also about perspective and perception: if you only see good in what you're doing and only see bad in what others do, you're probably not seeing the whole picture. So when looking at yourself and others, you should blink and try to see the bigger picture, before making any decisions or judgements.