013-The Journey to the 3/4 view of the invention of the Human Head - Part 01 014-The Journey to the 3/4 view of the invention of the Human Head - Part 02 015-The Journey to the 3/4 view of the invention of the Human Head - Part 03 016-The Journey to the 3/4 view of the invention of the Human Head - Part 04 017-The Journey to the 3/4 view of the invention of the Human Head - Part 05 018-The Journey to the 3/4 view of the invention of the Human Head - Part 06 019-Conclusion of the invention of the Human Head 020-Formulas for the Front View of the Invention of the Chest Cavity 021-Formulas for the Side View of the Invention of the Chest Cavity 022-The 3/4 view of the invention of the Chest Cavity 023-Formulas for the Back View of the Invention of the Chest Cavity 024-A Switch in Thinking