to have walked on his tiptoes from when he passed the gate that leads from the alley to the moor. The article ends with the information that Henry Baskerville was the next of kin and inheritor of the Baskerville fortune and estate, being the son of Sir Charless younger brother. However, Mortimer has some additional information, which he did not disclose earlier to protect his reputation as a man of science and to ensure that a tenant could be found. First, the remoteness of the moor had created a close scientific community that included himself, Sir Charles, Mr. Frankland of Lafter Hall, and Mr. Stapleton (a naturalist). As a doctor, Mortimer had become concerned about the stress Sir Charles was under from fear of the legend and recommended, with the agreement of Mr. Stapleton, that he go away from the moor for awhile. He was to leave for London the next day. Secondly, Mortimer had noticed when he went to examine the body of his friend that there were
trusses, with sophisticated castings for joint blocks and compression members, and forged eyebars and wrought-iron rods for tension members, all fabricated to high tolerances. This allowed them to be assembled easily and inexpensively in the field by unskilled labour using simple tools and erection techniques. The system prevailed in the USA because that country lacked a skilled labour force, and the remoteness of many bridge sites hampered the use of sophisticated machinery or the shipping of large bridge parts over long distances. A spirited debate ensued between England and the former colony during the last quarter of the 19th century over which system was best: easily erected pin-connected trusses on the "American plan," or European-style riveted trusses. Even though the rigid riveted truss was of superior design, American bridges remained competitive in world bridge
bers. Then the raw information that a substantial number of group members has been convinced can, by itself, convince the rest (Watts 8{ Dodd, 2007). Thus, the most influential leaders are those who know how to arrange group conditions to allow the principle of social proof to work in their favor. It is in this that Jones appears to have been inspired. His masterstroke was the decision to move the People's Temple community from urban San Francisco to the remoteness of equatorial South America, where the conditions of uncertainty and exclusive similarity would make the principle of social proof operate for him as per- haps nowhere else. There a settlement of a thousand people, much too large to be held in persistent sway by the force of one man's personality, could be changed from a following into a herd. As slaughterhouse operators have long known, the mentality of a herd makes it easy to manage. Simply get some members moving in
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