Imagine that I'm in art school, learning how to draw human figures the real way. The model begins with a series of 30 second poses, for five minutes. I am replicating this situation by looking at pictures of models, and using Photoshop instead of a sketchbook. In this virtual world, I also have the option of erasing lines that don't fit. Some artists would say that this is just not right; it's charcoal, newsprint, and a real model, or nothing.