  A new concept, primitive chaos, was proposed, as a concept closely related to
the fundamental problems of sciences themselves such as determinism, causality,
free will, predictability, and time asymmetry [{\em J. Phys. Soc. Jpn.} {\bf
2014}, {\em 83}, 1401]. This concept is literally a primitive chaos in such a
sense that it leads to the characteristic properties of the conventional chaos
under natural conditions. Then, two contrast concepts, nondegenerate Peano
continuum and Cantor set, are known as the origins of the primitive chaos. In
this study, the relation of these origins is investigated with the aid of a
mathematical method, topology. Then, we can see the emergence of interesting
concepts such as the relation of whole and part, and coarse graining, which
imply the essence of our intrinsic recognition for phenomena.
