A mixture of different design styles creating human interactive prototypes.

Shaping artefacts, usually digital or technical for people's use.

A workbench, for assembling electrical items, is being repainted in red with special acrylic paint that is washable. At the end of each working day, the bench is being washed down with a bucket of water. However, since the surface is not quite even, this creates small puddles which do not dry entirely during the night. If the bench is used the next morning without being wiped dry it still has small wet patches.

A swipe card reader is installed at an entrance door. As cards have two sides a large print sign is being installed next to the reader to indicate to the user, how the card needs to be inserted.

effectiveness, efficiency, safety

safety, economics, learnability

satisfying, enjoyable, easy to use, entertaining

supportive of creativity,
rewarding and emotionally fulfilling, motivating

mapping, consistency
and affordance

visibility, feedback and memorability

Such a learning device should be easy to learn, efficient, motivating
and rewarding.

Such a learning device should have good utility, be efficient, support creativity
and be aesthetically pleasing.