We noticed that in our landing directory we were receiving duplicate files.

I asked the source to investigate.

He told me that the issue was not at his end. He asked me to mark the issue has been resolved from his end. I refused.

We get on a call to debug the issue. After 30mins he is extremely frustrated. As he was sharing his screen, he runs the command `ls -ltr | uniq -cd` on his server which sends the files and then screams at me "Where are the duplicates? Show me. Check the output. There are no duplicates.".

I first muted the call. Had a good laugh. Made him repeat it to show my team mates. They had a good laugh too.

I then asked him to call it a day. And once you cool down, think about what you just showed me.