[QUOTE=chrislFor dealing with international projects, time zones are really no more convenient than having everybody on UTC, it's more that it's just what people got used to because clocks were invented long before ways to communicate at lightspeed across long distances, or easily synchronize those clocks across those distances.[/QUOTE]
What percentage of the human races works on international projects where they need to interact live on daily basis with people in other time zones, as opposed to working strictly within their own time zone?

0.0001, 0.00001 maybe?