In the studio of Leonardo da Vinci

Leonardo da Vinci, died 500 years ago this month. As well as being an outstanding painter Leonardo invented, amongst other things, the aeroplane, armoured tank, ball bearings, the helicopter, the self-propelled cart, canal lock gates and the swing bridge, all before any of them were possible! Remarkable. Here’s something he might have invented as well….

For a more serious look at invention versus innovation read Robert Baldock’s excellent article here.