Lever a place to stand, and I shall move the Earth with it' is a remark of Archimedes who formally stated the correct mathematical principle of levers (quoted by Pappus of Alexandria). It is assumed that in ancient Egypt, constructors used the lever to move and uplift obelisks weighing more than 100 tons. A lever is a beam connected to ground by a hinge, or pivot, called a fulcrum. The ideal lever does not dissipate or store energy, which means there is no friction in the hinge or bending in the beam. In this case, the power into the lever equals
The World That Never Was and his sympathy for his subjects. Writing for "The A.V. Club", Samantha Nelson gave the book a rating of "B-", explaining that "Butterworth's fascination with the era is a mixed blessing"; while Clif Garboden of the "Boston Phoenix" questioned the book's style and presentation but described it as "interesting, important, impressively (too) thorough, fair, and eye-opening". In the "International Socialist Review", Eric Kerl wrote ""The World That Never Was" brilliantly contextualizes the political radicalism of the time", but criticised Butterworth's ambivalence towards Marxism and Leninism and lack of an analysis of revolutionary strategy. The World That Never Was The World