system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What was worst case scenario if we hadn’t addressed Y2K?
gpt
A bunch of software controlling really important things like the banking system would have bugged out and caused a ton of problems. It likely would have resulted in huge re-engineering costs (bigger than the pre-re-engineering that happened) and people would have had to deal with service outages and interruptions in lots of things.