I hope you can find it in your heart to forgive this seeming tangent from our ongoing discussion of genki. There’s a particular, wonderful subtlety of ki-sense that I wish to explain fully and to do so requires a crash course in… well most of modern science, to be frank. You may be tempted to skip this section as I guess for many readers it tugs on those threadbare, unpleasant memories of high school (or memories yet to be made for you younger readers). In that case I hope you at least skim this section and feel encouraged to return as we progress. Some of the concepts I describe here will appear in modified forms throughout the rest of the textbook, and I would hate for you to miss what I believe are astounding parallels throughout the natural world.
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