Compound lever sudden movement of the key. The earliest remaining writings regarding levers date from the 3rd century BC and were provided by Archimedes. ""Give me a place to stand, and I shall move the earth with a lever"" is a remark attributed to Archimedes, who formally stated the correct mathematical principle of levers (quoted by Pappus of Alexandria). The idea of the compound lever is attributed to the Birmingham inventor John Wyatt in 1743, when he designed a weighing machine that used four compound levers to transfer a load from a weighing platform to a central lever from which the weight
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