% ruby -v
ruby 1.8.1 (2003-12-25) [i386-cygwin]

% ruby -e '"0" > 0'
-e:1:in `>': comparison of String with 0 failed (ArgumentError)
from -e:1

% ruby -e '0 > "0"'
-e:1:in `>': comparison of Fixnum with String failed (ArgumentError)
from -e:1

メッセージを統一しる!ヽ(`Д´)ノ