How many of them are remembered for the books and how many for their voice and body language?
Talk and "body language" is cheap. Summarizing your thoughts into a meaningful article/wiki/book/email is hard and very valuable.
How well this method applies to different sized groups is another question.
How many of them are remembered for the books and how many for their voice and body language?
Talk and "body language" is cheap. Summarizing your thoughts into a meaningful article/wiki/book/email is hard and very valuable.