system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What causes the “1,000 yard stare?”

It happens to me all the time and has put me in many awkward situations...
gpt
On a serious note, the thousand yard stare is essentially the lack of minor eye movements due to intense concentration or shock. We are subconsciously used to seeing minor eye movements so when they are absent, our mind alerts us that something is wrong.