so MC has never actually seen this thing before but somehow instantly knows that it's a fragment of the meteor...or is it the dude's half infected state that he's never seen and the meteor fragments are actually moderately common in future times? more to the point how the f*** does someone get close enough to ground zero to be hit with meteor shrapnel without getting hit by an accompanying shock wave strong enough to turn them into a paste smeared out from the point of impact? or if he got stabbed with it later on how did that manage to happen, I mean someone knifed him in post apocalypse land I could understand, but with a shard of the fallen meteor that caused everything...just no, cause who could be lucky enough to actually get a meteor shard and would still be so stupid as to stab him with said meteor shard and not bother pull it back out of him to keep it for later? I mean, even if they don't know it's from THE meteor, it's still more or less a functional weapon and there's a ton of undead around...unless someone stabbed him but he got away and then they both had to flee from swarming undeads?