FORE:Another difference between solid and expanding dies, which may be pointed out, is in the firmness with which the cutting edges are held. With a solid die, the edges or teeth being all combined in one solid piece, are firmly held in a fixed position; while with expanding dies their position has to be maintained by mechanical devices which are liable to yield under the pressure which arises in cutting. The result is, that the precision with which a screwing machine with movable dies will act, is dependent upon the strength of the 'abutment' behind the dies, which should be a hard unyielding surface with as much area as possible.Their own airplane had been headed south, down the coast.

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FORE:Socrates, then, did not create the cross-examining elenchus, but he gave it two new and very important applications. So far as we can make out, it had hitherto been only used (again, after the example of the law-courts) for the purpose of detecting error or intentional deceit. He made it an instrument for introducing his own convictions into the minds of others, but so that his interlocutors seemed to be discovering them for themselves, and were certainly learning how, in their turn, to practise the same didactic interrogation on a future occasion. And he also used it for the purpose of logical self-discipline in a manner which will be139 presently explained. Of course, Socrates also employed the erotetic method as a means of confutation, and, in his hands, it powerfully illustrated what we have called the negative moment of Greek thought. To prepare the ground for new truth it was necessary to clear away the misconceptions which were likely to interfere with its admission; or, if Socrates himself had nothing to impart, he could at any rate purge away the false conceit of knowledge from unformed minds, and hold them back from attempting difficult tasks until they were properly qualified for the undertaking. For example, a certain Glauco, a brother of Plato, had attempted to address the public assembly, when he was not yet twenty years of age, and was naturally quite unfitted for the task. At Athens, where every citizen had a voice in his country��s affairs, obstruction, whether intentional or not, was very summarily dealt with. Speakers who had nothing to say that was worth hearing were forcibly removed from the b��ma by the police; and this fate had already more than once befallen the youthful orator, much to the annoyance of his friends, who could not prevail on him to refrain from repeating the experiment, when Socrates took the matter in hand. One or two adroit compliments on his ambition drew Glauco into a conversation with the veteran dialectician on the aims and duties of a statesman. It was agreed that his first object should be to benefit the country, and that a good way of achieving this end would be to increase its wealth, which, again, could be done either by augmenting the receipts or by diminishing the expenditure. Could Glauco tell what was the present revenue of Athens, and whence it was derived?��No; he had not studied that question.��Well then, perhaps, he had some useful retrenchments to propose.��No; he had not studied that either. But the State might, he thought, be enriched at the expense of its enemies.��A good idea, if we can be sure of beating them first! Only, to avoid the risk of attacking somebody who is stronger than ourselves, we must140 know what are the enemy��s military resources as compared with our own. To begin with the latter: Can Glauco tell how many ships and soldiers Athens has at her disposal?��No, he does not at this moment remember.��Then, perhaps, he has it all written down somewhere?��He must confess not. So the conversation goes on until Socrates has convicted his ambitious young friend of possessing no accurate information whatever about political questions.90

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