Have you read the Outliers: The Story of Success? It's the third non-fiction book written by Malcolm Gladwell and published by Little, Brown & Company on November 18, 2008. In Outliers, Gladwell examines the factors that contribute to high levels of success. Throughout the publication, Gladwell repeatedly mentions the "10,000-Hour Rule", claiming that the key to achieving world class expertise in any skill, is, to a large extent, a matter of practicing the correct way, for a total of around 10,000 hours.
How many hours should interpreters need to practice to be able to achieve world class expertise in their skills?
The effective rendition of a message from a source language into a target language is delivered through simultaneous, consecutive or sight-translation mode of interpreting depending on the session and the setting. Except for few talented individual that have a natural predisposition to such skills, these need to be trained to achieve the maximum potential and reduce the risk for error to the minimum.