Hence discovery 3 plot timetravel if something is wrong fix it with timetravel then you can go back and fix the mess you created
Analogy in pc :
Hard format so al damage is gone
Patch it up
Wait for a new version .0 gives smaller patches x.0 give larger patches or gamecontent
So discovery 3 fixes rhe timeline with a larger event or content
That is why we also talk about something 2.0