Of course the ‘greater perceptual span’ of design
by drawing as opposed to vernacular design enabled
greater rates of experimentation and thereforeincreased
the risk of failure.
The more we innovate from one design to another the less
reliable will be the designer’s knowledge of ‘what might work’.
But there is another great problem with the process of design
The drawing is of course merely one form of representation
of some features ofthe object that are not yet made.
Every form of representation has its own characteristics and
therefore strengths and weaknesses in representing imagined
objects and conjuring up in our minds the experience of those
objects in real use.
The drawn image has conventions of views but all those
conventions are essentially variations on a theme of geometrical
and spatial relations of one sort or another.
In other words the drawing is good at representing how
the object will appear to the eye and how the various
constituent parts of it are related in space.
While this may in itself be valuable knowledge it is far from being
a complete and comprehensive representation of the features of
many commonly designed objects which really matter to their eventual