The subsequent slide begin, "This is a polyphonic SKiCal object. It also describes two instances but it needs new variances...For example Ronald McDonald appearing at two different restaurants at 7pm and 9pm."
Why can't this be supported by iCalendar too? Is it only the issue of indeterminant DTSTART/DTEND for VEVENTs? I think that this an incorrect assertion too. Right?
-- Frank