Exercise

a The premise 'there were many people waiting at the station' is irrelevant. While trains crash for a variety of reasons (human error, sabotage, faulty machinery, and so on), the number of people waiting at a station is rarely, if ever, a cause of the crash. Even if the claim is true, it adds no greater explanation to why the train crashed and thus is irrelevant, b There are no irrelevant premises here. The second premise, concerning competition, might seem to be irrelevant (given that the conclusion is about privatisation); however, the first premise, with its connection between competition and privatisation, makes it relevant, c The premise 'politicians get too many benefits' is irrelevant (since there are no further premises to make it relevant to the conclusion). Whether or not it is true does nothing to make the conclusion more likely to be accepted. Now, we may well wonder if there is another irrelevant premise. However, the mainp - softvnn.com conclusion as stated involves two elements: a question of trust (and whether or not politicians lie obviously bears on this question) and a question of the quality of their decisions (and politicians' knowledge is relevant to this matter). Relevance is specifically concerned with the relationship between premise and conclusion.

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