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
World Enough and Time (Doctor Who) the idea of Missy filling the Doctor's shoes was far more interesting. He also stated that some scenes were "bordering on unwatchable for young children" and "too slow and filled with exposition". Scott Collura of IGN gave the episode a 9.0, admiring the character development of Missy through the episode, as she is finally depicted as "out and about as the Mistress", and how Steven Moffat does a good job of deconstructing the name and meaning of the show. He went on to praise "World Enough and Time" as a great buildup for the season finale, noting that "like the