Binary "or" returns the logical disjunction of the two surrounding expressions. It's equivalent to || except for the very low precedence. This makes it useful for control flow:

        print FH $data		or die "Can't write to FH: $!";
##</code><code>##

die unless $live; ## the original line, which I expand a minute later

die unless $live or $reanimated; ## first change, and  first error; moving on for now


die unless $live or $reanimated or !$cooked; ## second change double negative, scary, still error, abandon unless, abandon unless, abandon unless

die if !$live or !$reanimated or $cooked; ## clarity, it works ... but some people think differently, so choice,

die if !($live or $reanimated) or $cooked; ## whooops, error again, logic not practiced

die if !($live and $reanimated) or $cooked; ## works again, choice is choice