Nassim Nicholas Taleb is a Lebanese-American scholar, author, and former derivatives trader whose work focuses on probability, risk, and uncertainty. He is best known for his influential books, including 'The Black Swan', which explores rare and unpredictable events, and 'Antifragile', which examines systems that benefit from disorder. Taleb has held academic positions at institutions such as New York University and has contributed significantly to fields like finance, statistics, and philosophy.