Your Critical Visualization Tool
I agree. Drawing in a sketchbook provides an immediate, and satisfying, medium for recording the world, and for experimenting with new pictorial ideas. For me, I like to draw people in railroad stations, cafes and in parks; I like to imagine people I have never met and to animate their faces with lively or deadpan expressions; I also like to use my sketchbook to invent places that have never existed, but which might make good subjects for a more finished drawing or painting.