This book is written for three levels of study. The levels are revealed in the discussions of definitions and theorems. In keeping with the idea of an inntuitive approach, the firsl level consists mostly of discussions and "proofs" based on colored drawings.
The second level increases the rigor of argument by linked detours to a file of additional information in the form of deductive logic.
The third level presents more challenging discussions by linked detours.
Chapter 1 Intuitive Logic
Chapter 2 Intuitive Sets