I don't think global time would be a problem like many people suggest. If you're in US and talk to somebody in Australia, you will quickly develop an intuition that time @X is night (or whatever it happens to be) over there, just like our other intuitions about how many things (weather, season, how long are sunsets, etc.) are different in different places. Timezones are failing at all of their jobs. Getting time to c…
I constantly forget which way the half hour difference is between Adelaide and Melbourne / Sydney!
Then I have regular contact with offices in London and LA. For some of the year it’s not too bad, and then our clocks switch the opposite way and it gets less convenient! Which way is which I can never remember.
Queensland doesn’t bother changing their clocks at all.
Writing software that deals with Timezones isn’t too bad these days, but supporting it is as it constantly confuses users I find!