At first we draw in symbols. A circle is a head. A line is an arm. We do it because circles and lines are easy to draw. But mostly we do it because they are expedient symbols, and because we have not observed, really observed, more details than those symbols can transmit.
The symbols are useful. They are easy to draw and they transmit with perfection a lot of information. They are economical. This first state of drawing is highly efficient. But we must go further and leave this heaven if we want to observe more details.
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