When I was training and learning about engineering, design and how to channel the creative muse, there was no doubt who did what. Engineers worked out why the industrial designers couldn’t make their fancy looking creations and product designers tried to fit between the two with a dangerous mix of practical maths and some coloured pencils. User experiences (UX) came down to what colour to specify the glowing bulb in the ‘Press this button to Start’ switch. But as computer lan