[He starts to shake his head, stops, then lifts a hand in a wobbly gesture.]

The undead... only came about... in recent times... in my world... Not the same... as yours... not the same... as this place either... You don't have... to burn them... but it can be... hard to make sure... the dead are... really dead... If you can't run... sometimes... fire is... the best way for people... Especially here... Kills the infection... That's why... the town was... half-burned...

It didn't happen... too much back home... but that's because... everyone's mostly dead.