User blog comment:Emilia Da'len/A bitter end/@comment-1396356-20140328053834/@comment-75.36.137.252-20140328085657

Which Comstock? each time they went thru a tear to a different dimension they left a Comstock behind who would keep on his course doing whatever they were supposed to be stopping. And then tehe would be infinite more of him  in other dimensions.

Thats the gist of the futility. For every 'reality' dimension you manage to change things, there are an Infinite number of  ones you didnt change that will have lots of crappy things continue to happen in them. You could try to change different ones till Doomsday and you would change so few that it would be as if you didnt change any  ( One divided by Infinity is Zero )