There is an answer to Japan flow

A basis of the derives from one center axis.

Is nature doing it as one of the law

A heart has atrioventricular node and a brain has Corpus callosum.

Now let's look at the figure below

It 's the also same tree trunk and root
　

Figure  the Reversal

you see(笑)？
Precisely  all there is a center




So how to define it  is necessary.




There is an answer to　Japan flow