Or would you rather use an explanation that the ki of the boat pushes against the ki of the air to overcome the ki of the earth to move the boat? Thus we have aiki.
I know you are being tongue-in-cheek, but I think about it this way (yes thats' M 2 C):
the words and thoughts come to us through time, from a different place, social context, and way of thinking of...almost everything. it is a different way of mapping -the same physical things- to descriptions/view of how and why
it works. I do not think there are always one-to-one correspondences of concepts from the world-view of one to the other. Isn't there that saying; "Oh, East is East, and West is West, and never the twain shall meet."