Wonders of the industrial world.
Just spent the whole day with the small crew of fabric engineers. Turning flat surfaces into 3-dimensional ones. An art requiring a detailed understanding of multi-dimensional physics, maths, intense concentration and artistic flair. And all mastery that your Nanna (or her nanna) probably aquired by the age of 19. Who says girls minds don't visualise shapes through 3-dimensions that well?
Then watched the Da vinci show. I mean, clever and all - but he didn't seem to actually construct much, did he?