Board Thread:Spoilers!/@comment-26830263-20161016071738/@comment-25926288-20161016130030

Well, hate to crush your spirits, but even with the broken, poorly deveoped magic system that Once has........Magic can't change the past.

Unless it is through avid research, immense power, and peculiar circumstances, noone can break the laws of magic. Henry is bound by essentially no rules, except that he cannot break the laws of magic: he cannot bring back the dead (somethings withstanding), he cannot make someone fall in love, he cannot change the past.

Now, could he somehow travel to the past? Maybe, but Henry seems to be trying his best to not break the rules (also one of his tasks is to record history and not use it for personal gain).

The rest of the things listed will likely be figured out normally and he wouldn't have a need to travel to the past. I mean, Sidney in mirror form could look into the past, so there's no need for Henry even stretching his authorial fingers.

Plus, noone knows about David;s father's murder, but David and Snow. Henry would also automatically think Jasmine is good, so he wouldn't question her "agenda".

A mythology quest would be fun, but I doubt the writers would explore that without a family trip. XD

'''TL;DR: Henry isn't omniscient. He's also trying to not abuse his authorial powers.'''