Why does this woman have an eye on her chin - the artist can’t draw? Why is this black square hanging on the wall - is it covering a hole in the wall? Why is the grass blue and the sky green - these are the drawings of a madman? I am sure that each of you has heard or asked similar questions. But I’ll tell you a terrible secret: it’s quite easy to understand why artists painted this way and not otherwise. Firstly, almost all artists painted their paintings on the same themes. Secondly, there are logical reasons why they chose such strange colors and shapes for everyday subjects. Do you want to know them? Then open this book and get ready to be engrossed. Why am I sure of this? Because after several years of blogging on Instagram, I know how interesting it is to tell even the most boring topic.