And maybe there'll be a hundred graveminds and Master Chief has to fight them all! Or maybe there'll be a giant grunt 100 feet tall and it'll be like Shadow of the Colossus and the chief'll have to climb up the grunt and punch a plasma grenade into its eye!
If you aren't a total dumbass you'll see my point! All this maybe stuff is ridiculous, as you can provide any number of extraneous or ridiculous possibilities through it.
there are many logical ways arbiter could find cheif. just as there are more likely ways that he wont. im just saying its ok to stretch a little bit. i mean dont you think that the chances of the portal closing on just half of the ship throwing arbiter directly to earth and landing safely in the ocean instead of solid ground where he wouldve died and cheif somewhere random in space and happening to drift close to whatever this thing is a pretty good long shot?