Artists are mystics rather than rationalists. They leap to conclusions that logic cannot reach.
Unless you're involved with thinking about what you're doing, you end up doing the same thing over and over, and that becomes tedious and, in the end, defeating.
Banal ideas cannot be rescued by beautiful execution.
The thinking of John Cage derived from Duchamp and Dada. I was not interested in that.
The idea part is simple but the visual perception is complex.
Obviously a drawing of a person is not a real person, but a drawing of a line is a real line.