Yet another Japanese language note

Ever wonder about how all these illogical and contradictory Zen Buddhist koans, like "the sound of one hand clapping" or "beginner`s expertise"?

Just found out that there is no clear distinction between "any" and "some" in Japanese.

How can you expect these Japanese Zen masters (though Zen Buddhism originated in China, it only reached its modern form in Japan) to be logical, when you don`t even have the vocabulary to separate existential and universal statements or distinguish sufficient and necessary conditions?