Most early sketches of designers are not the finished records of what the concepts will look like ultimately. These are developmental sketches, which code sufficient information for the designer to later mentally reconstruct a finished view or recollect the decision without loss. These sketches seem to catch the essence and not the details of the idea. Why are they so skeletal and often incomplete? Why is it that they often eliminate the details and the richness of a designer’s visualization?
Early ideation sketches are incomplete and coded
What appears to be critical in early sketching is the quickness with which the idea can be recorded. The designer often launches into vigourous sketching once the new thought occurs. The pressure to capture his idea onto a paper is so intense that he is often forced to take considerable freedom from sketching conventions and rules. He is aware that the time it may take to make accurate sketches may obstruct the flow of ideas. Haven't we all experienced that in delay in writing a sentence, one loses the thought itself?
The quickness with which the ideas have to be recorded must necessarily match the flow,
speed, evolution and the development of the thought process. If the speed of representation is slower, it would hinder the thought process and allow the mind to drift. It is therefore obvious that they must be matched by learning to control the speed of sketching.