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The world's most famous detective is now 130 years old, and although in fact he never really existed, he is today a very real part of English culture.
  Sherlock Holmes has passed on his remarkable methods to Scotland Yard. His analysis is based on the most detailed research. Holmes made famous the arts of observation and deduction.
  When he met Doctor Watson, his friend and assistant, for the first time, he said ;  "I see you have been to Afghanistan," But how did he know?  Watson looked like a medical and a military man. He had a dark skin, but his arms were white. His left arm was hurt. So Holmes concluded that he was an English army doctor, and he had recently come back from a hot country, with an injured arm. The only possible country, at the time was Afghanistan!
   "Elementary, my dear Watson!".
    Another example: when Dr. Watson showed him his watch, Holmes said: "I see that this watch belonged to your elder brother, who is now dead. He was an untidy man, and he was very poor, but he had periods of prosperity. At the end of his life he drank too much." Again, the explanation was elementary!​