Trainspotter Rafs Mayet’s maiden Blue Train voyage evokes his family history and comparisons to other locomotive rides he has taken
		
	 
	
		
			
				
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			 / 24 October 2001
			
		
		VS Naipaul won the Nobel Prize for Literature this month. But how good is his latest book? And why is he denouncing other writers? Paul Theroux has some insights.