Whether something is "unexplainable" or not depends on who is trying to explain it. :-) Ultimately, nothing is unexplainable.

I've seen things that I couldn't exactly explain...but that doesn't mean they are forever unexplainable, does it?

For instance, I can't exactly explain how those AFO's (alien flying objects) I saw in the late 60's manuevered the way they did...in a technical sense. I can't explain their technology, because I don't know anything about it. I'm sure they, however, can explain it just fine.

I've met people who can explain Chi just fine...and demonstrate how it works...in a manner that is physically perceivable through normal sense perceptions. The fact that there is a Guest here who is so ignorant of it that he can blithely state that it doesn't even exist means diddly-squat to me. He simply doesn't know anything about it.