I feel like I'm losing my mind reading this comment thread. How can there be any people that think abolishing timezones is a good idea? The article covers the obvious problems pretty well.
I live in San Francisco. I travel to South Korea for work, I check in at the hotel, I'm jetlagged, I fall asleep, and wake up some time later. It's dark outside. I'm very tired, but I can't be late for work. How do I know if I can go back to sleep, or have to get up?
In a world without timezones: My phone says it's 7pm. I don't know what that means in Korea, in SF it means it's time for lunch. I either have to look it up, or have it internalized that in Korea it means it's in the middle of the night.
In a world with timezones: My phone has already switched over to local time. It says it's 4am. I go back to sleep.