Why are the post conference master classes optional instead of included as part of the general conference?
(back) Not everyone has the time or training funds available to attend both post conference and general conference sessions, plus many people may not be interested in the more specialized in-depth subjects offered during post sessions. Likewise, some people will be interested in attending just post conference sessions, but not the general conference, whose topics may not be in-depth enough for their needs. Separating the post conference sessions from the general conference allows everyone to attend the parts they want most.