Ordinary people walk at their own pace and distractions, with or without purpose, they forget to focus on walking itself.
Similarly, a person may forget to listen, walk and think thoroughly.
Imagine there is a cave in front of you, where the fear of zero gravity and the silent darkness surround you.
Instantaneously, your arrogance collapse.
What you are imagining becomes real- all of a sudden, you find yourself in the cave of silent night.