system
Given the following post, respond as if you're commenting on Reddit:
human
[Matrix] Since people in Zion only had a first name were there any people who happened to have the same name?
gpt
It appears that they choose a new name. Thomas Anderson choosing Neo as his name was basically because the Zion people knew him from the internet.  So perhaps they use their username from the internet, and the new people in Zion chose a new name. Like Th0maz Anderzun.