Guild Wars 2

So I am bit curious why the current Story journal system can’t let you play specific parts of the new content without reseting the whole thing to zero in a way?
Dunno if this has been answered somewhere or not but would really like to know if its even possible for the journal to let us chooce specific parts of the chain of events without reseting the whole event chain. It most likely has something to do how the instanced are group together to form the story.
if someone at anet has free time at some point or if you guys have already answered this then point me to the right direction ^^.

Replaying the story allows you to replay the 3 main story instances whenever you like; they appear on the map as purple stars. Once you click “replay”, those purple stars should appear, although, I think you will have to check your mail first.

Otherwise, the other non-instanced story content must be followed through chronologically, so yes, for the non-instanced story content, you have to repeat everything.

Edit: Here is a link to a similar thread: https://forum-en.gw2archive.eu/forum/livingworld/s2/Repeat-the-WHOLE-boring-story/first#post4171304

All you need to know right here

http://www.reddit.com/r/Guildwars2/comments/29r74l/faq_story_journal/

Karizee.8076:

All you need to know right here

http://www.reddit.com/r/Guildwars2/comments/29r74l/faq_story_journal/

Otherwise good but I am looking for the “reason” it does what it does and maybe a “yes” or “no” or “maybe” buried somewhere from anet if its even possible for the journal to let us do the specific instances without restarting the whole story or a way to abondan the replay once we are done with the achies. Not after a technical gizmos or anything but some kind of “yea it does that for umm well just because it does that” would be nice :P and if its supposed to work like this and what happens once the episode 2 comes out?