WEARHAUS ARC Manual page 41

PROCESS
The Arc began as a crude electrical prototype
cobbled together in July 2013.
Initial exploratory sketches were followed by a few
iterations of a full 3D design. Once the look and
feel was decided, it was time to churn out more
prototypes.
In all, over 20 versions of the Arc were built during
the course of a year to test on users and refine
every detail, inside and out.