Why create a Semantic Web vocabulary for events?

1. To try to solve the personal information disaster

• scattered schedules in HTML, XML, iCalendar, proprietory (and binary) formats in public and private places, none easily searchable or combinable
• copying and pasting from webpages to PDAs, and between formats and devices
• errors in schedules leading to missed meetings, missed opportunities
• a general inertia about scheduling since finding out if you are busy is such an effort
• people getting irritated by this, and saying:

Wouldn't it be great if it was easy to find out what's happening (and in particular, what I'm supposed to be doing)? Why do I have to do this stuff that my computer could do for me?