system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 how did banks clear checks and get funds from other banks before computerization?
gpt
Every night after the close of business, there were scores of airplanes carrying paper checks from one city to the other.  Had to spend the night once at a small hotel at the Greenville, NC airport and was shocked at the number of planes taking off and landing at night.  Turns out Greenville was a regional center for check clearing.

Thanks for the awards.  Makes not getting any sleep that night worth it.