Did you solve it? The forgotten Dutch invention that created the modern world

The answer to today’s engineering challenge

Earlier today I asked you to reinvent a component of the sixteenth century Dutch sawmill, which – according to a new book – was the world’s first industrial machine. You can read that post here, along with some great BTL discussion about the world’s greatest inventions. (Spoon or spear? Plough or spectacles? Transistor or trousers?)

Round and up