Premier League things we learned: The key question facing Mikel Arteta and Arsenal - and the manager now destined for the sack if he doesn't change his ways
				
																	
								
				NATHAN SALT: Liverpool sent another pointed reminder to those doubting their endurance in this title race by blowing Tottenham away in a game where they could conceivably have scored 10.				
			
			
			
			
						
						
						
					
		