Hand (unit) radix numbering system, where a hand is four inches. The hand, sometimes also called a handbreadth or handsbreadth, is an anthropic unit, originally based on the breadth of a male human hand, either with or without the thumb, or on the height of a clenched fist. On surviving Ancient Egyptian cubit-rods, the royal cubit is divided into seven palms of four digits or fingers each. Five digits are equal to a hand, with thumb; and six to a closed fist. The royal cubit measured approximately 525 mm, so the length of the ancient Egyptian hand was about 94 mm. In
How to Fly a Horse describing the book's anecdotes as "rather lovely," Annand concluded, "All told, I suspect there is actually only one thing that connects history's innovative geniuses: their library shelves are entirely empty of 'Smart Thinking'." How to Fly a Horse How to Fly a Horse: The Secret History of Creation, Invention, and Discovery is a 2015 non-fiction book by the technology pioneer Kevin Ashton. In the book, Ashton debunks many common myths about creativity and proposes that hard work, rather than creative genius, is the true source of innovation. Ben East of "The Observer" wrote, "[Ashton's] well chosen examples reinforce the idea